Genesis 19:27 - Ellicott's Commentary On The Whole Bible

Abraham gat up early in the morning. — This was necessary, because he had a walk of some miles before he reached “the place where he stood before Jehovah” on the previous evening; and probably the mighty forces which overthrew the cities had been some hours at work when he reached the head of the ravine through which the terrible scene became visible. Naturally his anxiety to know the result of his intercession, and the fate of his brother’s son, would urge him to be on foot at the early dawn.