God has forgiven Adam, but many of his children have not. They have blamed Adam for the curses of mortality, for death, and even for their own sins. There is a grand irony in the fact that God has forgiven Adam but most of “Christianity” has not.
“We are fully assured by this passage that Adam stands forgiven of his transgression in the garden and that his posterity is free from all responsibility for that transgression. We are held accountable only for our own sins. If this passage had remained in the book of Genesis or if the correct doctrine had survived in our current New Testament, the whole mistaken concept of original sin and infant baptism as taught and practiced by much of Christianity for the past eighteen hundred years could have been avoided.” (Robert J. Matthews, Selected Writings of Robert J. Matthews: Gospel Scholars Series [Salt Lake City: Deseret Book Co., 1999], 478)