Being a Christian does not exempt you from sin. All people sin! 

In Romans 3:10, Paul said that "no one is righteous—not even one" (NLT). 

"But I'm a good person," you say. "I don't drink or smoke or steal or anything like that."

Well good! But that does not make you righteous. Good deeds do not determine your sinlessness. 

John addressed this in 1 John 1: 8: " If we say that we have no sin, we deceive ourselves, and the truth is not in us." We are sinners and nothing that we say or do will ever change that.

This is the depravity of mankind, brought on by the sin of Adam and Eve. It's a sin issue. David admits this in his open confession to God—Psalm 51. He acknowledges that his sinful actions were present since conception (v5).

Sin is so destructive that it turns saints into sinners. It robs children of their innocence. It tears families apart. It cripples the strong and further weakens the weak. It sabotages love, disrupts joy, and inflicts pain. Sin has no respect for power, position, or person. All are considered equal allies of its evil schemes. These are the vices of the devil—the evil one. And he wants nothing more than to steal, kill, and destroy (John 10:10). 

The Creator had compassion on His creation and did something extraordinary. " For  He made Him [Jesus] who knew no sin  to be  sin for us, that we might become  the righteousness of God in Him" ( 2 Corinthians 5:21).

"But  God demonstrates His own love toward us, in that while we were still sinners, Christ died for us" (Romans 5:8). 

So, yes! All people sin. But  sin has no power over us, because we are not under the law  which binds but under grace which frees. Thank God for grace!

Sections of this devotional was adopted from the Evangelical Sunday School Lesson Commentary 2021-2022,  Sin Mars Creation.