Do Christians sin? Bible Contradictions

This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

No one is without sin.

1 Kings 8:46 View context

If they sin against thee, (for [there is] no man that sinneth not,) and thou be angry with them, and deliver them to the enemy, so that they carry them away captives unto the land of the enemy, far or near;

2 Chronicles 6:36 View context

If they sin against thee, (for [there is] no man which sinneth not,) and thou be angry with them, and deliver them over before [their] enemies, and they carry them away captives unto a land far off or near;

Proverbs 20:9 View context

Who can say, I have made my heart clean, I am pure from my sin?

Ecclesiastes 7:20 View context

For [there is] not a just man upon earth, that doeth good, and sinneth not.

Romans 3:23 View context

For all have sinned, and come short of the glory of God;

1 John 1:8 View context

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

Christians are sinless. (And so are some non-christians.)

Romans 5:14 View context

Nevertheless death reigned from Adam to Moses, even over them that had not sinned after the similitude of Adam's transgression, who is the figure of him that was to come.