  False. There are many passages in the Torah/Old Testament in which sons inherit the sins of their fathers upto multiple generations. For example read Exodus 20:5:  I the LORD thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me  Since you celebrate Passover each year there is no excuse for your ignorance. Why did Yahweh punish the first-born of all the Egyptians for the 'sin' of their Pharoah?   False. The passage you refer to refers to the hatred of G-d himself - a sin that awards punishment to descendents. However, these descendents are STILL born devoid of sin. The firstborn thing shows the slights of the Pharoah falling on his entire people. They were innocent  hence the dismay at their destruction .    Here's some explanations for you, FAR better than I could sum up, showing the themes of CLEAN SLATE in the Torah.     http://www.cleanslate.org/Biblenotes.html