Jonathan praised David to Saul and said, "Sir, don't do wrong to your servant David. He has never done you any wrong; on the contrary, everything he has done has been a great help to you.
He risked his life when he killed Goliath, and the LORD won a great victory for Israel. When you saw it, you were glad. Why, then, do you now want to do wrong to an innocent man and kill David for no reason at all?"
One day an evil spirit from the LORD took control of Saul. He was sitting in his house with his spear in his hand, and David was there, playing his harp.
That same night Saul sent some men to watch David's house and kill him the next morning. Michal, David's wife, warned him, "If you don't get away tonight, tomorrow you will be dead."
so he sent some men to arrest him. They saw the group of prophets dancing and shouting, with Samuel as their leader. Then the spirit of God took control of Saul's men, and they also began to dance and shout.
When Saul heard of this, he sent more messengers, and they also began to dance and shout. He sent messengers the third time, and the same thing happened to them.
Then he himself started out to Ramah. When he came to the large well in Secu, he asked where Samuel and David were and was told that they were at Naioth.
He took off his clothes and danced and shouted in Samuel's presence, and lay naked all that day and all that night. (This is how the saying originated, "Has even Saul become a prophet?")