Holier Than Thou - Biblical Contradictions

Does God punish children for the sins of their parents?

Exodus 20:5, "You shall not bow down to them or worship them; for I, the LORD your God, am a jealous God, punishing the children for the sin of the fathers to the third and fourth generation of those who hate me..."

Deuteronomy 24:16, "Fathers shall not be put to death for their children, nor children put to death for their fathers; each is to die for his own sin."

Numbers 23:19, "God is not a man, that he should lie, nor a son of man, that he should change his mind."

Isaiah 14:20-21, "...The offspring of the wicked will never be mentioned again. Prepare a place to slaughter his sons for the sins of their forefathers; they are not to rise to inherit the land and cover the earth with their cities."

Ezekiel 18:20, "The soul who sins is the one who will die. The son will not share the guilt of the father, nor will the father share the guilt of the son. The righteousness of the righteous man will be credited to him, and the wickedness of the wicked will be charged against him."

According to Exodus and Isaiah, children are punished for the sins of their fathers, however, according to Deuteronomy and Ezekiel, children are not punished for the sins of their fathers.

"Sorrow is better than laughter: for by the sadness of the countenance the heart is made better. The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth." (Ecclesiastes 7:3-4, KJV)

"Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun." (Ecclesiastes 8:15, KJV)