Careful Little Ears What You Hear

“Then He said to them, ‘Take heed what you hear. With the same measure you use, it will be measured to you; and to you who hear, more will be given.” (Mark 4:24 NKJV).

When I was a kid, there was a little Sunday school song called Oh, Be Careful Little Eyes What You See. Maybe you remember it too. Be careful little eyes what you see. Be careful little ears what you hear. Be careful little mouth what you say. It was simple enough for children to sing, but the older I get, the more I realize there was a whole lot of spiritual truth tucked inside those few lines.

Jesus said, “Take heed what you hear.” Pay attention to it. Be careful with it. Do not treat everything that reaches your ears as though it deserves unrestricted access to you. That instruction feels especially important now because we hear so much. There was a time when you actually had to go looking for information. Now information comes looking for us. News alerts, podcasts, audiobooks, videos playing while we cook dinner. Then there is music in the car, and social media clips while we wait in line showing us someone else’s outrage, someone else’s fear. Even someone else’s opinion about what is wrong with the world, wrong with the church, wrong with our family, wrong with our generation, and probably wrong with us too if we keep listening long enough.

We can fill nearly every quiet space of our lives with somebody talking and we often do.

The question is not simply whether everything we hear is technically sinful. That is sometimes too shallow a question. Something can be permissible and still be unprofitable. Something can contain truth and still train our minds toward fear. Something can be entertaining and still stir up anger, lust, discontentment, suspicion, envy, pride, or cynicism.

The better question may be, “What is this cultivating in me?“

Jesus’ words in Mark 4 come in the middle of His teaching about hearing and receiving the Word of God. Earlier in the chapter, He told the parable of the sower. The seed is scattered, but the condition of the soil affects what happens with it. Some hear the Word and it is immediately taken away. Others receive it quickly but have no root. Others allow the cares of this world, deceitfulness of riches, and desire for other things to choke the Word. Then there are those who hear the Word, receive it, and bear fruit.

So when Jesus says, “Take heed what you hear,” He is not giving a random warning about sound entering our ears. He is talking about how we receive truth and what we do with what has been given to us. Hearing is not always passive. We choose what we return to. We choose what we replay. We choose whose voices we give authority. We choose what gets fifteen seconds of our attention and what gets fifteen hours over the course of a week.

We may not control every voice that crosses our path, but we do have some responsibility for which voices we invite to stay. Proverbs 4:23 says, “Keep your heart with all diligence, For out of it spring the issues of life.” That means guarding the heart is not paranoia. It is stewardship. We sometimes hear “guard your heart” and imagine building walls around ourselves so nothing uncomfortable can get in. But biblical guarding is not the same thing as hiding. We still live in the world. We still encounter difficult people. We still need to know what is happening around us. We cannot grow spiritually by pretending evil does not exist or by refusing to listen to anything that challenges us.

Guarding the heart means we stop acting as though repeated exposure has no effect on us. Because it does. Spend hours listening to people complain and eventually complaining starts to sound normal. Spend hours consuming outrage and everything begins to look like a reason to be angry. Spend enough time listening to suspicious people and you may find yourself questioning everyone’s motives. Fill your thoughts constantly with fear and eventually fear begins interpreting circumstances before faith gets a chance to speak.

Sometimes we wonder why our thoughts have become so negative while feeding ourselves negativity from breakfast until bedtime. We wonder why we are anxious while consuming a steady stream of people telling us what might go wrong. We wonder why we are irritated with everyone when most of what we have listened to all day was somebody being irritated with everyone.

Then we try to fix the fruit while ignoring what we have been watering. Jesus said in Luke 6:45, “For out of the abundance of the heart his mouth speaks.” That verse usually gets used when somebody says something ugly. We look at what came out of the mouth and say, “Well, that shows what was in the heart.” And it does.

But sometimes we need to walk backward from the mouth. What has been filling the heart? There is a kind of spiritual circle here. What repeatedly enters through our eyes and ears influences what occupies our thoughts. What we continue thinking about can settle more deeply into our hearts. Then what fills the heart eventually finds a way out through our mouths, our attitudes, our reactions, our choices, and our treatment of other people.

We take something in. We turn it over. We meditate on it. We begin agreeing with it. Then eventually we speak from it. This does not mean everything wrong inside of us was put there by something we watched or heard. Jesus makes that very clear in Mark 7.

After correcting the Pharisees for focusing on external religious traditions while neglecting the condition of the heart, Jesus said that what defiles a person comes from within. He went on to describe evil thoughts and sinful behaviors that proceed from the human heart. That matters because we cannot blame the podcast, the news, the music, TikTok, our friends, our family, or the culture for the sin already present in us. The problem is deeper than our environment. But that does not mean our environment is irrelevant.

The things we repeatedly consume can feed what is already there. If I have a tendency toward fear, constantly listening to fearful speculation can give that fear plenty to eat. If I struggle with offense, listening to people rehearse grievances all day can make offense feel righteous. If pride is hiding in my heart, content that constantly tells me how foolish everyone else is can become very appealing.

The outside voice did not create the heart problem. It may simply know how to keep it well fed.

That is where discernment becomes necessary. First Thessalonians 5:21 says, “Test all things; hold fast what is good.” Notice that Scripture does not tell us to believe everything. It also does not tell us to fear everything. It tells us to test. That requires more maturity than simply sorting everything into Christian and non-Christian categories.

Not everything labeled Christian is spiritually healthy. Not every sermon is sound teaching. Not every person holding a Bible is handling it faithfully. Not every prophetic voice is speaking for God. Not every motivational message that includes a Scripture verse is actually rooted in Scripture.

We have to test what we hear. Does this agree with the character of God revealed in Scripture? Is the Bible being interpreted in context, or merely being used to support somebody’s point? Is this producing the fruit of the Spirit in me, or is it constantly stirring up fear, arrogance, outrage, suspicion, or obsession?

And we should be willing to ask the same questions about things that are not religious. What kind of person am I becoming while I listen to this? That question can get uncomfortable. Because sometimes the answer is that we enjoy things that are not helping us. Sometimes we like being outraged. Sometimes gossip feels interesting. Sometimes suspicion feels like discernment. Sometimes feeding our irritation makes us feel justified. Sometimes we keep listening because a voice agrees with what we already want to believe.

That is why guarding what we hear is not simply about cleaning up a playlist. It is about allowing God to expose why certain voices have such a strong pull on us in the first place.

There may be things we need to turn off, or turn down. There may be voices that are not inherently evil but have become far too loud in our lives. I think sometimes we imagine that if something is not sinful, it cannot possibly be spiritually unhealthy for us. But Paul wrote in Philippians 4:8, “whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report… meditate on these things.” That is not a command to pretend everything is lovely.

Paul knew suffering. He knew persecution. He knew imprisonment. He knew conflict inside the church and hostility outside of it. He was not asking Christians to live with their heads in the sand. He was teaching them that the mind needs direction.

What we repeatedly dwell on matters.

Romans 12:2 tells us not to be conformed to this world but to be transformed by the renewing of our minds. Renewal does not happen accidentally. The world is discipling people all day long. Every voice is offering some way of seeing God, ourselves, other people, success, suffering, money, relationships, sexuality, justice, power, happiness, and truth.

Some of those messages are obvious. Others slip in quietly. That is why time in Scripture cannot simply become another item squeezed between everything else we are consuming. If I spend fifteen minutes reading the Bible and four hours listening to voices that contradict it, I should not be surprised when those other voices become easier to hear.

This also does not mean we earn spiritual maturity points by increasing our Bible minutes. Holy Spirit is the One who teaches, transforms, convicts, and renews us through the truth of God’s Word. But we still decide what receives our attention. There are seasons when we may need to become very deliberate about that. Turn the television off. Leave the phone in another room. Drive without filling every minute with noise. Stop listening to the person who constantly feeds your anger. Take a break from the account that leaves you comparing your life with someone else’s. Step away from the endless news cycle when you realize you are no longer becoming informed, you are simply becoming afraid.

And then give God some room to speak. Not because God is incapable of speaking over the noise. But perhaps because we have become so accustomed to the noise that we have stopped noticing how loud it is. Psalm 46:10 says, “Be still, and know that I am God.” Sometimes stillness reveals what constant noise has been covering. You may discover that you are more anxious than you realized. More angry. More suspicious. More discouraged. Or simply exhausted from carrying thoughts God never asked you to carry. And that realization is not condemnation. It is an invitation.

Jesus does not expose what fills the heart so He can shame us. He exposes it because He intends to change us. The gospel is not that we can purify ourselves by perfectly controlling everything we see and hear. We could throw away every television, delete every app, cancel every subscription, sit alone in a quiet room, and still discover that our deepest problem came into the room with us. We need more than better media habits.

We need Christ. We need forgiveness for what is already in our hearts, the Holy Spirit renewing our minds, and the Word of God teaching us what is true. But grace does not make us careless. Because once God shows us that something is feeding what He is trying to put to death in us, continuing to feed it is not freedom. It is foolishness.

So maybe today the question is not simply, “What have I been listening to?”

Ask one question deeper.

What has my attention been cultivating in me?

Look at what has been coming out of your mouth lately. Look at the thoughts you keep rehearsing. Look at what makes you angry fastest. Look at what you fear. Look at where suspicion has started growing. Look at what you cannot seem to stop thinking about.

Sometimes the fruit will tell you something about what has been feeding the root. Then bring it before God without excuses. Ask Him to show you what needs to become quieter and what needs to become louder.

Because Jesus still says, “Take heed what you hear.”

Be careful little ears what you hear.

Not because every sound is dangerous. Not because Christians should be afraid of the world. But because your attention is valuable, your heart requires guarding, and the voices you repeatedly welcome can begin shaping what you believe is normal, reasonable, important, and true.

And sooner or later, what fills the heart will find its way out.