Was God dishonest about the tree of the knowledge of good and evil?

We know a couple of things from the account in Genesis: 1. There are two trees, the tree that grants eternal life, and the tree of the knowledge of good and evil. 2. Adam and Eve were apparently mortal before eating the fruit of the tree of the knowledge of good an evil: > the Lord God said, “The man has now become like one of us, knowing good and evil. He must not be allowed to reach out his hand and take also from the tree of life and eat, and live forever.” (Genesis 3:22) So according to Genesis, it doesn't seem that the fruit of the tree of the knowledge of good and evil caused human mortality. The existence of a tree that confers eternal life isn't proof that there was mortality, but it seems pretty pointless to have such a tree unless there is mortality. Then we have the punishments that we levied. None of them were death (the promised punishment). But the reward promised by the serpent actually arrives. Why did God tell Adam and Eve that the consequences of eating the fruit were different than the actual consequences that occurred? In Christianity, Christ is the sacrifice that atones for this original sin. Does the question of whether God was being honest when describing the tree and the consequences of eating its fruit matter? I'm curious about the general, historical view of this issue in Christianity.