Yahweh the liar !!

I asked a pastor does your god Yahweh lie? He said NEVER !! How dare you even think of such a thing, Yahweh is pure he doesn't lie never did and never will. So I said your bible says he did Infact he lied to a Prophet of his Moses..

I appeared to Abraham, to Isaac, and to Jacob as El-Shaddai--'God Almighty'--but I did not reveal my name, Yahweh, to them. (Exodus 6:3)

                                   -------------  Below Yahweh lied Openly ------------------

He also said to him, "I am Yahweh who brought you out of Ur of the Chaldeans to give you this land to take possession of it." (Genesis 15:7)

Abraham named the place Yahweh-Yireh (which means "the LORD will provide"). To this day, people still use that name as a proverb: "On the mountain of the LORD it will be provided." 

(Genesis 22:14) 

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The pastor was speechless, I said how do u explain this deception Yahweh openly lying to his Prophet and what's worse is Moses supposed to have written the 5 books known as the pentateuch, if he was told by Yahweh that his name was'nt made known to Abraham why did he still write in his first book genesis that the name Yahweh was known by Abraham?? Did Moses not remember what Yahweh told him? How can you even trust a book full of lies and deception...........