Adam's sin is imputed to us and our sin was imputed to Jesus.
Isa 53:6-12 ESV
(6) All we like sheep have gone astray; we have turned--every one--to his own way; and the LORD has laid on him the iniquity of us all.
(7) He was oppressed, and he was afflicted, yet he opened not his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he opened not his mouth.
(8) By oppression and judgment he was taken away; and as for his generation, who considered that he was cut off out of the land of the living, stricken for the transgression of my people?
(9) And they made his grave with the wicked and with a rich man in his death, although he had done no violence, and there was no deceit in his mouth.
(10) Yet it was the will of the LORD to crush him; he has put him to grief; when his soul makes an offering for guilt, he shall see his offspring; he shall prolong his days; the will of the LORD shall prosper in his hand.
(11) Out of the anguish of his soul he shall see and be satisfied; by his knowledge shall the righteous one, my servant, make many to be accounted righteous, and he shall bear their iniquities.
(12) Therefore I will divide him a portion with the many, and he shall divide the spoil with the strong, because he poured out his soul to death and was numbered with the transgressors; yet he bore the sin of many, and makes intercession for the transgressors.
2Co 5:21 ESV
(21) For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.
Rom 5:12-19 ESV
(12) Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned--
(13) for sin indeed was in the world before the law was given, but sin is not counted where there is no law.
(14) Yet death reigned from Adam to Moses, even over those whose sinning was not like the transgression of Adam, who was a type of the one who was to come.
(15) But the free gift is not like the trespass. For if many died through one man's trespass, much more have the grace of God and the free gift by the grace of that one man Jesus Christ abounded for many.
(16) And the free gift is not like the result of that one man's sin. For the judgment following one trespass brought condemnation, but the free gift following many trespasses brought justification.
(17) For if, because of one man's trespass, death reigned through that one man, much more will those who receive the abundance of grace and the free gift of righteousness reign in life through the one man Jesus Christ.
(18) Therefore, as one trespass led to condemnation for all men, so one act of righteousness leads to justification and life for all men.
(19) For as by the one man's disobedience the many were made sinners, so by the one man's obedience the many will be made righteous.
Marv
