Melachim Alef 18:44

44 And it came to pass the seventh time, that he said, Hinei, there ariseth a little cloud out of the yam, as small as kaf ish (a man’s palm). And he said, Go, say unto Ach’av, Harness up [thy merkavah] and get thee down that the geshem stop thee not.

Melachim Alef 18:44 Meaning and Commentary

1 Kings 18:44

And it came to pass at the seventh time that he said, behold
there ariseth a little cloud out of the sea, like a man's hand
Either about the size or in the form of it; rain water comes out of the sea, and, being strained through the clouds and air, becomes fresh:

and he said, go up:
the meaning seems to be, that he should first go down from the mount, and then go up to that part of it where Ahab was:

say unto Ahab, prepare thy chariot;
bind or fasten the horses to it, as the phrase seems to signify:

and get thee down;
from the mountain where he was, to go to Jezreel, which lay low in a valley:

that the rain stop thee not;
on the road, that might be made impassable by it, signifying that such abundance should fall as would make it so.

Melachim Alef 18:44 In-Context

42 So Ach’av went up to eat and to drink. But Eliyahu climbed up to Rosh HaCarmel (top of Carmel); and he cast himself down upon the ground, and put his face between his birkayim (knees),

43 And said to his eved, Go up now, look toward the yam. And he went up, and looked, and said, There is nothing. And he said, Go again sheva pe’amim (seven times).

44 And it came to pass the seventh time, that he said, Hinei, there ariseth a little cloud out of the yam, as small as kaf ish (a man’s palm). And he said, Go, say unto Ach’av, Harness up [thy merkavah] and get thee down that the geshem stop thee not.

45 And it came to pass in the meanwhile, that the Shomayim grew black with clouds and ruach, and there was a geshem gadol. And Ach’av rode, and went to Yizre’el [Jezreel].

46 And the Yad Hashem was on Eliyahu; and he girded up his loins, and ran ahead of Ach’av to the entrance of Yizre’el.