Holier Than Thou - Biblical Contradictions

Did Abraham know God by his name?

Genesis 22:14, "So Abraham called that place The LORD Will Provide. And to this day it is said, 'On the mountain of the LORD it will be provided.' "

Exodus 6:2-3, "God also said to Moses, 'I am the LORD. I appeared to Abraham, to Isaac and to Jacob as God Almighty, but by my name the LORD I did not make myself known to them.' "

According to Genesis chapter 22, Abraham knew God by the name which was later revealed to Moses ("I AM"), however, according to Exodus chapter 6, God told Moses that he did not reveal this name to Abraham.

"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)