Your effect is no effect at all. Their born innocent remember? And if they die in infancy there is no need for your universal atonement.
Sorry you are in denial
Mortality and a sin nature are both an effect
Native depravity, not native demerit.
Deuteronomy 24:16 (ESV) — 16 “Fathers shall not be put to death because of their children, nor shall children be put to death because of their fathers. Each one shall be put to death for his own sin.
2 Kings 14:6 (ESV) — 6 But he did not put to death the children of the murderers, according to what is written in the Book of the Law of Moses, where the LORD commanded, “Fathers shall not be put to death because of their children, nor shall children be put to death because of their fathers. But each one shall die for his own sin.”
2 Chronicles 25:4 (ESV) — 4 But he did not put their children to death, according to what is written in the Law, in the Book of Moses, where the LORD commanded, “Fathers shall not die because of their children, nor children die because of their fathers, but each one shall die for his own sin.”
Leviticus 18:29 (ESV) — 29 For everyone who does any of these abominations, the persons who do them shall be cut off from among their people.
Ezekiel 18:2–4 (KJV 1900) — 2 What mean ye, that ye use this proverb concerning the land of Israel, saying, The fathers have eaten sour grapes, and the children’s teeth are set on edge? 3 As I live, saith the Lord GOD, ye shall not have occasion any more to use this proverb in Israel. 4 Behold, all souls are mine; as the soul of the father, so also the soul of the son is mine: the soul that sinneth, it shall die.
Ezekiel 18:20 (ESV) — 20 The soul who sins shall die. The son shall not suffer for the iniquity of the father, nor the father suffer for the iniquity of the son. The righteousness of the righteous shall be upon himself, and the wickedness of the wicked shall be upon himself.