'Mistake' in the Bible

"'If a man eats a holy offering by mistake, he must add one fifth to it and give the holy offering to the priest.

Saul replied, "I have sinned. Come back, my son David. I won't harm you, for you treated my life with value this day. I have behaved foolishly and have made a very terrible mistake!"

Do not let your mouth cause you to sin, and do not tell the priest, "It was a mistake!" Why make God angry at you so that he would destroy the work of your hands?"

You are making a fatal mistake. For you sent me to the Lord your God and asked me, 'Pray to the Lord our God for us. Tell us what the Lord our God says and we will do it.'