Elijah after taunting them when the baal were earnestly trying to please there God and trying to pray so that their God can do something .When nothing happend

After that Elijah has also prepared for the Alter and the alter is full of water that can be clearly read on 1st King ch:18. The wood is so wet as the water is floating there we can read there.

The Bull was also laid on the alter and as Elijah bowed down before the ALmighty to pray that let everyone know that you are the only God . Then the fire of the Lord consumed the Alter the Stone and the dust.

When the People saw this they fell on the ground to accept only HE IS LORD.

I think by this we can just imagine what would be the condition of King Ahab how he would be bowind down before the Lord Almighty.

This proves there is only One GOD.

May God Bless us ALL