When the first couple Adam and Eve disobeyed God, they and eventually all of humanity became sinners and separated from God. So God devised a plan to save humanity by paying the penalty of sin to redeem mankind. This plan was executed on a Friday some 2000 years back on Calvary, where Jesus became a sin offering to God. On the cross there was an exchange. Jesus exchanged His righteousness and took upon Himself our punishment. Here are a few such crucial exchanges (It is followed by the references to the Holy Bible)
Jesus was wounded that we might be healed
Isa 53:5 But He was wounded for our transgressions; He was bruised for our iniquities; the chastisement of our peace was on Him; and with His stripes we ourselves are healed.
Jesus was made to be sin that we might be made righteous
2Co 5:21 For He has made Him who knew no sin, to be sin for us, that we might become the righteousness of God in Him.
Jesus tasted death that we might have life
Heb 2:9 But we see Jesus, who was made a little lower than the angels for the suffering of death, crowned with glory and honor, that He by the grace of God should taste death for all.
Jesus became poor that we might be rich
2Co 8:9 For you know the grace of our Lord Jesus Christ, that, though He was rich, for your sake He became poor, in order that you might be made rich through His poverty.
Jesus was made a curse that we might be blessed
Gal 3:13-14 Christ redeemed us from the curse of the Law, being made a curse for us (for it is written, “Cursed is everyone having been hanged on a tree”); (14) so that the blessing of Abraham might be to the nations in Jesus Christ…
Jesus was rejected that we might be accepted
Isa 53:3 He is despised and rejected of men…Eph 1:5-6 to the praise of the glory of His grace, in which He has made us accepted in the One having been loved.