Difficult situation testify our faith

1 King 16:21-34, 17:1-6
Omri became the king of Israel, he built a city on the hill, calling it Samaria.
Omri did evil the eyes of the Lord and sinned more than all those before him.
Ahab son of Omri became king of Israel and reigned in Samaria over Israel twenty-two years. He did more evil in the eyes of the Lord than any of those before him, He also married Jezebel daughter of Ethbaal king of the Sidonians.
Elijah said to Ahab, "As the Lord, the God of Osrael, lives, whom I serve, there will be neither dew nor rain in the next few years except at my word."
Then the word of the Lord came to Elijah,"Leave here, turn esatward and hide in the Kerith River. You will drink from the brook, and I have ordered the ravens to feed you there."

Why?
Omri and Ahab still doing evil in the eyes of the Lord, so the angry of the Lord came upon Israel, there was no rain in the land of Israel.
The Lard let Ahab know these is come from the Lord through his servant Elijah.
The Lord provide food for his servant Elijah in special way. By the ravens and a widow with a son, provides the food for him and her family.

How?
Serve the Lord is a heard word but would not let anything. The Lord provides his servant in special way, let us know it is the sovereignty of the Lord and his mercy.
Difficult situation testify our faith, no matter what situation I have, the Lord is my only hope.