They got up early in the morning, and just before dawn Samuel called to Saul on the roof, “Get ready, and I will send you on your way!” So Saul got ready, and both he and Samuel went outside together.
Providence having at length brought Samuel and Saul together, we have here an account of what passed between them in the gate, at the feast, and in private. I. In the gate of the city; passing through that, Saul found him (Sa1 9:18), and, little thinking that he was Samuel himself, asked him the way to Samuel's house: Tell me where the seer's house is...
Commenting on 1 Samuel 9:18-27
And they arose early,.... Neither of them being able to sleep, as Abarbinel supposes; not Samuel for thinking what he was to do the next morning, anoint Saul king over Israel; nor Saul for what Samuel had hinted to him about the desire of all Israel being upon him, and for the honour done him at the feast, and because of the conversation they had...
And they arose early: and it came to pass about the spring of the day, that Samuel called Saul to the top of the house, saying, Up, that I may send thee away. And Saul arose, and they went out both of them, he and Samuel, abroad. (p) To speak with him secretly: for the houses were flat above.