“The law is only a shadow of the good things that are coming—not the realities themselves. For this reason it can never, by the same sacrifices repeated endlessly year after year, make perfect those who draw near to worship. Otherwise, would they not have stopped being offered? For the worshipers would have been cleansed once for all, and would no longer have felt guilty for their sins. But those sacrifices are an annual reminder of sins. It is impossible for the blood of bulls and goats to take away sins.
Therefore, when Christ came into the world, he said:
“Sacrifice and offering you did not desire,
but a body you prepared for me;
with burnt offerings and sin offerings
you were not pleased.
Then I said, ‘Here I am—it is written about me in the scroll—
I have come to do your will, my God.“
First he said, “Sacrifices and offerings, burnt offerings and sin offerings you did not desire, nor were you pleased with them”—though they were offered in accordance with the law. Then he said, “Here I am, I have come to do your will.” He sets aside the first to establish the second. And by that will, we have been made holy through the sacrifice of the body of Jesus Christ once for all” (Hebrews 10:1-10)
Man by himself cannot deal with his own guilt or sin problem. He must have help from the outside.
In order to forgive himself, he must have forgiveness from the one he has offended. Yet man is unworthy to ask God for forgiveness.
That then is the reason for the cross. The cross did what sacrificed lambs could not do. It erased our sins, not for a year, but for eternity. The cross did what man could not do. It granted us the right to talk with, love, and even live with God.
You can’t do that by yourself. I don’t care how many worship services you attended or good deeds you do. Your goodness is insufficient. You can’t be good enough to deserve forgiveness. Not me, not you, not anyone! The Bible states in Romans 3:23 “For all have sinned, and come short of the glory of God.”
And that is why you and I need a savior in Jesus Christ. “For Christ also suffered once for sins, the righteous for the unrighteous, that he might bring us to God, being put to death in the flesh but made alive in the spirit” (1 Peter 3:18).