The Importance of Repentance

Back in the OT days, sacrifices for sin were brought to the temple, and the person bringing the sacrifice would repent from whatever sin they had committed, so that their sacrifice wasn't made in vain.

If Jesus was our perfect sin sacrifice, why would our actions after His sacrifice be any different than those back then?

If anything, shouldn't our actions be MORE repentant, since His cost was so great?

There's a reason Jesus said to the adulterous woman,

"...Go and sin no more." John 8:11

Because repentance after the sacrifice brings forgiveness.

"... and that REPENTANCE FOR FORGIVENESS OF SINS would be proclaimed in His name to all the nations, beginning from Jerusalem." Luke 24:47

If we accept the covering of His sacrifice, but then continue sinning, we have made His sacrifice in vain.

"FOR IF WE GO ON SINNING willfully after receiving the knowledge of the truth, THERE NO LONGER REMAINS A SACRIFICE FOR SINS, but a terrifying expectation of judgment and the fury of a fire which will consume the adversaries. Anyone who has set aside the Law of Moses dies without mercy on the testimony of two or three witnesses. How much severer punishment do you think he will deserve who has trampled under foot the Son of God, and has regarded as unclean the blood of the covenant by which he was sanctified, and has insulted the Spirit of grace?" Hebrews 10:26-29