For He hath made Him to be sin for us, who knew no sin; that we might be made the righteousness of God in Him. -2 Corinthians 5:22

Christ, the Son of God, has become man. Cheerfully and willingly He took upon Himself our nature; veiled the form of Deity in a humble garb of clay; was born of the Virgin Mary, lived a life of holiness, and died a death of sacrifice. Through this marvellous death of the Man, the God, Christ Jesus, God is at peace with His people. The peace is made already, for He is our peace. God is at peace with every man for whom Jesus died. Jesus Christ stood in the room, place, and stead of His chosen people. Christ was punished for their sins. Justice cannot punish twice for one offense. Christ, the substitute, being punished, the sinner cannot be amenable for his own offences. Those for whom Jesus died go free. The proclamation is that God is willing to be reconciled, that He is reconciled. It is an announcement, not that you may have peace merely, but that peace is made with God by Jesus Christ for you-full peace, without condition, not half-made, but wholly made; the penalty being completely paid to the last doit, and the sacrifice completely slaughtered till the last drop of blood had expiated the last offence… From condemnation he is, therefore, free; of salvation he is, therefore, sure.  ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3497.cfm