When.

1 Kings 18:44, 45
On the seventh time the servant reported, "There is a cloud as small as a man's hand rising from the sea." And Elijah replied, "Go and tell Ahab, 'Prepare your chariot and go down before the rain stops you.'" . . .

Matthew 16:2
But He replied, "When evening comes, you say, 'The weather will be fair, for the sky is red;'