To clarify his meaning, Lehi explicitly states that any cursing that is due their lineage might be answered upon the heads of their parents. Lehi clearly sees his son’s culpability in the prophecies of the future of that lineage. In like manner, we as parents are responsible for the teachings to our children:
“And again, inasmuch as parents have children in Zion, or in any of her stakes which are organized, that teach them not to understand the doctrine of repentance, faith in Christ the Son of the living God, and of baptism and the gift of the Holy Ghost by the laying on of the hands, when eight years old, the sin be upon the heads of the parents.” (D&C 68:25)