My view here, and I will upset someone again for saying so, is that Jesus isn't God. God is immortal and cannot die. But Jesus could die once, and then, according to Romans 6:9, after his resurrection he would never die again (as a reward from God).Just some questions. If Jesus(as) was a sacrifice for the sins of mankind, where is the sacrifice? If you accept that Jesus(as) is God(swt) he could not die, only the physical body could. But, the physical body would only have been an insignificant bit of created matter, replaceable by God(swt) if he so desired. Giving up something which is insignificant is not a sacrifice. What was the sacrifice? Where is the price of sacrifice paid and to whom was the sacrifice made too? Who paid the price of the sacrifice, if you say God(swt) does that mean Jesus(as) was God(swt)'s property and not God(swt)? Who was the sacrifice made to? To God(swt)? But, does it makes sense in concept of a sacrifice to pay the sacrifice price to yourself?
Did Jesus(as) know he was God(swt)?
Jesus was without sin, so he was the equal of what Adam had been before he sinned. One perfect man (Adam) introduced sin into the human family and so another perfect man (Jesus) was needed to buy back what Adam had lost.
Jesus had the potential to father a whole new perfect race of humanity that would be without sin. But he never did so. Any potential descendants died with him. So although he was just one man, his sacrifice could be viewed as equal to repurchasing all mankind that have ever lived.
Jesus isn't God and so was not sacrificing himself to himself. By his obedience he vindicated and sanctified God's name. Satan brought reproach upon God when he claimed that no human would prove faithful out of genuine love and loyalty (Job 2:4-5). But Jesus provided the perfect answer to Satan's taunting challenge (Proverbs 27:11).