'Obey' in the Bible

But Pharaoh said, “Who is the Lord that I should obey His voice to let Israel go? I do not know the Lord, and besides, I will not let Israel go.”

Now then, if you will indeed obey My voice and keep My covenant, then you shall be My own possession among all the peoples, for all the earth is Mine;

Be on your guard before him and obey his voice; do not be rebellious toward him, for he will not pardon your transgression, since My name is in him.

But if you truly obey his voice and do all that I say, then I will be an enemy to your enemies and an adversary to your adversaries.