People are required to offer a guilt offering to God when they've done something wrong for God to forgive them. Nowadays, no longer an offering needs to be given due to the sacrifice Jesus has made on the cross. We can come to God with full confidence that when we repent of our sins, He will forgive. We need to be conscious of our sins & such consciousness of sins comes from a reverent fear of God. For if we do not respect & fear Him for who He is then sins to us is nothing of our concern. 1 Sam 6 demonstrates how people have learnt it the hard way.