Matthew 5:19 Whoever therefore breaks one of the least of these commandments, and teaches men so, shall be called least in the kingdom of heaven; but whoever does and teaches them, he shall be called great in the kingdom of heaven.
It is a sobering thing Jesus is telling the people as they listened to Him teaching.
We are all going to have to account for the things we have done and are doing in our lives.
God is not going to just sweep things under the carpet; yes, He wants to forgive us and to forget about our sins, but we have to make sure we ask Him for forgiveness.
Aim for the best position. Aim for being with God and pleasing God, always.