The Spirit of the LORD
Then Samuel took the horn of oil, and anointed him in the midst of his brethren: and the Spirit of the LORD came upon David from that day forward. So Samuel rose up, and went to Ramah. ¶ But the Spirit of the LORD departed from Saul, and an evil spirit from the LORD troubled him. And Saul's servants said unto him, Behold now, an evil spirit from God troubleth thee. 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. 
(1 Samuel 16:13-16)
We see here that the spirit of the LORD came upon David from that day forward, but departed from Saul and that an evil spirit from the LORD troubled him. If we read carefully we see that the spirit that came upon David belonged to the LORD, but the evil spirit that came upon Saul was different; the LORD controlled it. 
This is most interesting, to find out more, let's go back a bit. 

The Israelites wanted a king over them like the people round about them, they were not happy with the status of being ruled by judges, people who were raised by the LORD. 
If we read Judges 2:18 we see that the LORD raised up these judges over His chosen people because they continually sinned against Him by worshipping idols. 
For example, we see in Judges 11:29 that the spirit of the LORD came upon Jephthah who judged Israel. 
However, the sons of the judges were not raised up and there were periods when there were no judges. In these times the Israelites went back into idolatry and were punished by the LORD their God. A pattern emerged; after heavy persecution by their neighbours the Israelites called for help from the LORD, who then supplied them with another judge, and this up and down cycle went on for some considerable time as we can see by reading the book of Judges. 
The Israelites saw that their neighbours had kings to rule over them continually and wanted the same. They confused the spiritual need of worshipping God themselves with the need of a permanent "judge", a king on a worldly level. This need was as a result of not knowing God. 
And it came to pass, when Samuel was old, that he made his sons judges over Israel. Now the name of his firstborn was Joel; and the name of his second, Abiah: they were judges in Beersheba. And his sons walked not in his ways, but turned aside after lucre, and took bribes, and perverted judgment. Then all the elders of Israel gathered themselves together, and came to Samuel unto Ramah, And said unto him, Behold, thou art old, and thy sons walk not in thy ways: now make us a king to judge us like all the nations. 
(1 Samuel 8:1-5)
And the LORD said unto Samuel, Hearken unto the voice of the people in all that they say unto thee: for they have not rejected thee, but they have rejected me, that I should not reign over them. According to all the works which they have done since the day that I brought them up out of Egypt even unto this day, wherewith they have forsaken me, and served other gods, so do they also unto thee. Now therefore hearken unto their voice: howbeit yet protest solemnly unto them, and shew them the manner of the king that shall reign over them. And Samuel told all the words of the LORD unto the people that asked of him a king. And he said, This will be the manner of the king that shall reign over you: He will take your sons, and appoint them for himself, for his chariots, and to be his horsemen; and some shall run before his chariots. And he will appoint him captains over thousands, and captains over fifties; and will set them to ear his ground, and to reap his harvest, and to make his instruments of war, and instruments of his chariots. And he will take your daughters to be confectionaries, and to be cooks, and to be bakers. And he will take your fields, and your vineyards, and your oliveyards, even the best of them, and give them to his servants. And he will take the tenth of your seed, and of your vineyards, and give to his officers, and to his servants. And he will take your menservants, and your maidservants, and your goodliest young men, and your asses, and put them to his work. He will take the tenth of your sheep: and ye shall be his servants. And ye shall cry out in that day because of your king which ye shall have chosen you; and the LORD will not hear you in that day. Nevertheless the people refused to obey the voice of Samuel; and they said, Nay; but we will have a king over us; That we also may be like all the nations; and that our king may judge us, and go out before us, and fight our battles. 
(1 Samuel 8:7-20)
So the LORD gave them a king, his name was Saul and in 1 Samuel chapters 9 and 10 we see the providence of the LORD over Saul. 
In all these passages we see the hand of the LORD over His chosen people, trying to lead them in His ways. We also see that they were just the same as the nations around them. God required that they joyfully follow Him, but no, they wanted a leader on a worldly level, someone they could see and submit to. 

A comparison today is the "Church"; all those people following after men in some forty thousand different denominations, instead of allowing the Holy Spirit to work individually in their lives, blessing them with His providence and power. That they follow blindly after a preacher or denomination, shows that most professing Christians don't know God the Godhead (Father or Son or Holy Spirit), or are too lazy to do what He asks when coming into Covenant with Him. 
Please don't be like them, dear brother or sister in the Lord, their end-life is not what God desires of you; He wants you to be with Him one day. 
And this is why there are so few God-given miracles today; the professors lack faith in God, a faith that they shall receive when they ask the God that they know and worship on a personal basis. 
The above Old Covenant passages still apply to us today, but with a slightly different emphasis. You see, all born again Christians have the Holy Spirit in them, just like David "from that day forward", and I don't know whether God the Father will give us New Covenant children an evil spirit, if like Saul, we are disobedient to His wishes. However, look at what is stated in these New Covenant passages: 
But if ye have bitter envying and strife in your hearts, glory not, and lie not against the truth. This wisdom descendeth not from above, but is earthly, sensual, devilish. For where envying and strife is, there is confusion and every evil work. 
(James 3:14-16)
From whence come wars and fightings among you? come they not hence, even of your lusts that war in your members? Ye lust, and have not: ye kill, and desire to have, and cannot obtain: ye fight and war, yet ye have not, because ye ask not. Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts. Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God. Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy? But he giveth more grace. Wherefore he saith, God resisteth the proud, but giveth grace unto the humble. Submit yourselves therefore to God. Resist the devil, and he will flee from you. Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded. 
(James 4:1-8)
If we submit ourselves to our Creator, humbling our pride in our own accomplishments, studying the word of God under the power of the Holy Spirit and being obedient when spoken to, we shall start experiencing a wonderful rapport with God that can only grow stronger the longer that we carry on doing so. 
What a wonderful future we can inherit.