confess: Leviticus 5:5, Leviticus 26:40; Joshua 7:19; Job 33:27-28; Psalms 32:5; Proverbs 28:13; 1 John 1:8-10
and he shall: Not only confession, but restitution, in every possible case, is necessary in order to obtain forgiveness.
with the principal: Leviticus 5:15, Leviticus 6:4-7, Leviticus 7:7; Luke 19:8