In the book of 1 Kings 18:43, how did nothing become something?

1 Kings 18:43 states that:

“Go and look toward the sea,” he told his servant. And he went up and looked. “There is nothing there,” he said. Seven times Elijah said, “Go back.”

Prior to the verse, Prophet Elijah had sent King Ahab to go and eat, for there was a storm coming. This was a strange, almost unbelievable claim coming from Elijah, seeing how the sky was clear, with no traces of dark clouds....

1 Kings 18:43 states that:

“Go and look toward the sea,” he told his servant. And he went up and looked. “There is nothing there,” he said. Seven times Elijah said, “Go back.”

Prior to the verse, Prophet Elijah had sent King Ahab to go and eat, for there was a storm coming. This was a strange, almost unbelievable claim coming from Elijah, seeing how the sky was clear, with no traces of dark clouds. Elijah went up Mount Carmel and crouched, with his face between his knees (a sign of prayer). He then instructed his servant to go and look towards the sea, for any signs of clouds. The servant went seven times and on the seventh time, he saw a small cloud coming from the sea. Judging from its size, it was unexpected that the cloud could produce rain, let alone a storm. The next verses state how the little cloud ended up covering the entire sky, and there was a heavy downpour that day. Out of nothing (a clear sky), came something (a torrential downpour). From nothing, Elijah’s faith in his God did not waver; he knew his God would not fail him. Consequently, out of nothing, there was Elijah’s belief in the Almighty, and his God did not disappoint as he rapidly multiplied the small clouds to dark ones, enough to warrant a heavy rain.