1 Corinthians 11:27

Wherefore he that eats this bread, or drinks this cup of the Lord, in an improper manner, shall be guilty of the body and the blood of the Lord.

1 Timothy 1:13

me, I say, who before was a reviler and a persecutor and an overbearing man. But I obtained mercy, because I did it ignorantly in unbelief:

Hebrews 10:26-29

For if we sin willfully, after we have received the knowledge of the truth, there remains no longer a sacrifice for sins;

Treasury of Scripture Knowledge

Summary

And if the whole congregation of Israel sin through ignorance, and the thing be hid from the eyes of the assembly, and they have done somewhat against any of the commandments of the LORD concerning things which should not be done, and are guilty;

Through ignorance

Bible References

Through ignorance

1 Timothy 1:13
me, I say, who before was a reviler and a persecutor and an overbearing man. But I obtained mercy, because I did it ignorantly in unbelief:
Hebrews 10:26
For if we sin willfully, after we have received the knowledge of the truth, there remains no longer a sacrifice for sins;