Did God lie to Moses about visiting Abraham first?

“And he [God] said to him [Abram], I am The LORD who brought thee out of Ur of the Chaldees,”

Genesis 15:7 (AKJV-1769 edition)

-VERSUS-

“And I [God] appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.”

Exodus 6:3 (AKJV – 1769 edition)