John Calvin Commentary Genesis 3:9

"And Jehovah God called unto the man, and said unto him, Where art thou?" — Genesis 3:9 (ASV)

And the Lord God called unto Adam. They had already been struck by the voice of God, but they lay bewildered under the trees, until another voice more effectively reached their minds. Moses says that Adam was called by the Lord. Had he not been called before? The previous sound, however, was a confused one, which did not have sufficient force to stir the conscience.

Therefore, God now approaches closer and, from the tangled thicket of trees, draws him, however unwilling and resisting, out into the open. In the same way, we also are alarmed by the voice of God as soon as His law sounds in our ears; but soon we grasp at shadows, until He, calling upon us more forcefully, compels us to come forward, arraigned at His tribunal.

Paul calls this the life of the Law, when it slays us by charging us with our sins. For as long as we are pleased with ourselves and are inflated with a false notion that we are alive, the law is dead to us, because we blunt its point by our hardness. But when it pierces us more sharply, we are driven into new terrors.