A reader recently asked if the Bible says worry is a sin. Here was our response:
While the Bible never explicitly says that worry is a sin, we can conclude this based on Scripture. That’s because most worry or anxiety is a failure to trust God and His goodness or to believe what He told us. For example, the Sermon on the Mount records Jesus’ admonition to His followers to trust God to take care of them and not worry (for example, Matthew 6:25). Psalms 55:22 puts it like this:
“Cast your cares on the LORD and he will sustain you; he will never let the righteous fall.”
And 1 Peter 5:6-8 makes it even more explicit:
“Humble yourselves, therefore, under God's mighty hand, that he may lift you up in due time. Cast all your anxiety on him because he cares for you. Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour.”
In other words, our worry leads us astray and allows Satan a foothold into our lives. Since “sin” is, at its core, “missing the mark” that God has set for us, then worrying is not living up to God’s standard. Jesus made the mark clear here, and our sin is failing to believe that God will care for us, even though He promised to do so. Of course, we all fall short of this mark and allow ourselves to worry. And you’ll find quite a bit of worry in the Psalms and in the actions of Jesus’ followers. That’s why we have to be even more grateful that God sent Jesus to pay the penalty for our sins, including our lack of trust in Him.
We have several verses on worry and anxiety that will allow you to study this further.