Commentators note that Israel's fear of King Og was understandable, given his gigantic stature and powerful army. However, God directly addressed this fear with a command, "Fear him not," and a promise. John Gill highlights that God's statement, "I have delivered him into your hand," was a declaration of a certain future victory, as if it had already happened. This shows that God's promises are the antidote to our fears, assuring us of outcomes He has already determined.