Does God send evil spirits? Does God do this for HIS glory?

Good morning all! God is good all the time, all the time God is good.  TOO BLESSED TO BE STRESSED!!!!!
   We say God is good, but, does God ever allow evil to come upon us?  Hmmm!  Good question to ponder.
   Yesterday, God sent Samuel out to pick a man to replace Saul, a man who " was ruddy, and withal of a beautiful countenance, and goodly to look to."   Well, Samuel anointed David with oil and the spirit of the LORD came upon him (David).  Look at 1 Samuel "¹⁴ But the Spirit of the Lord departed from Saul, and an evil spirit from the Lord troubled him."  
  Well, this evil spirit came upon Saul, while the spirit of the LORD came upon David.  Saul's servants recognized what had happened and they went to Saul and said: "¹⁶ Let our lord now command thy servants, which are before thee, to seek out a man, who is a cunning player on an harp: and it shall come to pass, when the evil spirit from God is upon thee, that he shall play with his hand, and thou shalt be well."   
  Saul told his servants to find such a person; and, amazingly, one of the servants knew of a man named Jesse who had a son "18......................that is cunning in playing, and a mighty valiant man, and a man of war, and prudent in matters, and a comely person, and the Lord is with him."   
   Then what happened?  Well, Saul sent a message to Jesse that he should send David, who is with the sheep, to Saul.
   "²³ And it came to pass, when the evil spirit from God was upon Saul, that David took an harp, and played with his hand: so Saul was refreshed, and was well, and the evil spirit departed from him."   
   Is this a coincidence or was God involved?  Yes, I know, GOD  WAS INVOLVED!!
Many say God does not do evil. Verse 14 -was the evil spirit from God? My question to you, friend, is, did God do evil?  OR  did God just not stop evil?  Please send your comment and view.  Love you all.
In Christ's Love and Grace
    Johnny