Romans 5:12–21 compares the work of Adam with the work of Christ to show how sin and death came into the world, and how God made a way to escape them. Adam, specially created by God, became the first lawbreaker when he ate from the restricted tree. He brought sin and death to all who came after him. Jesus, hung on a tree—a phrase implying crucifixion—paid for our sin, making it possible for all who believe to reign with Him in eternal life.
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“Romans 5:20” Bibleref.com
20 The law came in that the trespass might abound; but where sin abounded, grace abounded more exceedingly; 21 that as sin reigned in death, even so grace might reign through righteousness to eternal life through Jesus Christ our Lord.