Jamieson, Fausset and Brown on 1 Kings 18:43

43. Go up now, look toward the sea--From the place of worship there is a small eminence, which, on the west and northwest side, intercepts the view of the sea [Stanley; Van De Velde]. It can be ascended in a few minutes, and presents a wide prospect of the Mediterranean. Six times the servant went up, but the sky was clear--the sea tranquil. On the seventh he described the sign of approaching rain [1Ki 18:44].