"Then the Lord God called to the man, and said to him, 'Where are you?'"
The context of this verse is immediately after Adam had sinned. "And they heard the sound of the Lord God walking in the garden in the cool of the day, and the man and his wife hid themselves from the presence of the Lord God among the trees of the garden. 9Then the Lord God called to the man, and said to him, "Where are you?" 10And he said, "I heard the sound of Thee in the garden, and I was afraid because I was naked; so I hid myself." (Gen. 3:8-10). Does this mean that God didn't know something? Not at all. Someone can easily ask a question to which they know the answer. Usually, the reason to do that is to point something out or teach something. Obviously, Adam and Eve had sinned. God asked, "Adam, where are you?" Where was Adam? He was hiding from God. Adam's sin had destroyed his fellowship with the Lord. God knew this, and He was pointing it out to Adam. It is a question we need to ask of ourselves. Where am I? Am I in fellowship with God or in rebellion against Him?