"From the Lord"

1 Samuel 26:12
So David took the spear and the jug of water by Saul’s head, and they got away; and no man saw or knew it or awoke. For they were all asleep, because a deep sleep from the LORD had fallen on them.

I am curious about the phrase "from the Lord." It seems that many times God gave to certain people what seems unfit to come from Him.

1 Samuel 16:14
Now the Spirit of the LORD had departed from Saul, and an evil spirit from the LORD tormented him.

1 Samuel 19:9
But an evil spirit from the LORD came upon Saul as he was sitting in his house with his spear in his hand.

Exodus 9:12,10:20, 10:27, 11:10, 14:8
But the LORD hardened Pharaoh's heart...

And yet the words of Romans 9:19-21 come to mind, "One of you will say to me: "Then why does God still blame us? For who resists his will?" But who are you, O man, to talk back to God? "Shall what is formed say to him who formed it, 'Why did you make me like this?' "Does not the potter have the right to make out of the same lump of clay some pottery for noble purposes and some for common use?"

Lord - look upon me with favor and keep me in Your will. Protect me from temptation and from a spirit and heart that would turn away from You. Amen