God instituted a blood sacrifice for sin atonement. You can’t achieve righteousness until you are born again. The blood sacrifice was established by God at the dawn of creation.
Blessed is the king who comes in the name of the Lord. Jesus is imploring us to recognize the signs of the times. Jesus presented himself as the perfect lamb of God.
You and Jesus are brother and sister if you are doing the will of God. Good deeds during your life is the evidence of your faith. Changing of your mind will eventually change your behavior..