“Without God, nothing could have existence. God is the basis of all logic in reality and he is in no way inferior to logic. Logic comes from God, not God from logic. But when it comes to how we know things, logic is the basis of all thought, and it must come before any thought about anything, including God. For example, I need a map before I can get to Washington, D.C. But Washington must exist before the map can help me get there. Even so, we use logic first to come to know God, but God exists first before we can know him.”—Norman Geisler
“When people say that God need not behave “logically,” they are using the term in a loose sense to mean “the sensible thing from my point of view.” Often God does not act in ways that people understand or judge to be what they would do in the circumstances. But God never behaves illogically in the proper sense. He does not violate in His being or thought the fundamental laws of logic.”—J.P. Moreland
God is the ground of logic; it is part of his nature and character. And God always acts consistently with his nature.