1 Kings 18:44

So the servant returned seven times, and at the seventh time he said, Behold there is a little cloud like a man’s foot drawing up water. Whereupon he said, Go up and say to Achab, Prepare thy chariot and go down lest the rain overtake thee.

And the servant went again seven times: and it came to pass at the seventh time, that, behold, a little cloud like the sole of a man's foot brought water; and he said, Go up, and say to Achaab, Make ready thy chariot, and go down, lest the rain overtake thee.