There are always two spirits at work: the Holy Ghost and a satanic or false spirit. Witchcraft comes from a satanic spirit and opposes God's Spirit.
Rarely does man have the opportunity to participate in heavenly activity while still on earth. Singing is one of those rare events that enables the Christian a glimpse into a heavenly behaviour. Job chapter 38 sheds light on some of the events surrounding creation when it proclaims that “the morning stars sang together, and all the sons of God shouted for joy” (Job 38:7). These spiritual beings saw the creation of God and could not help themselves but to burst into song. The origin of singing is heavenly, though it has been more often used in unholy ways. Not only is musick’s origin heavenly, but long after the world has sung its last song, heaven will continue to enjoy God’s gift of musick (Revelation 5:9). For this reason, God’s people should never take this for granted but enjoy this heavenly benefit as often as possible.
The Bible seems to point to Pharaoh most often as an example of someone with a heart hardened through sin and the deceitfulness of power and fame. Pharaoh's hardened heart led him from one rebellious act to the next. He constantly fought against the Lord and the Lord’s man. Even after all of the miracles in Egypt and the abundance of judgments, he chose to pursue the children of Israel as they departed from Egypt. Pharaoh's hardened heart led him to pursue them to the Red Sea. Out of all the troublesome effects of a hard heart, the most troubling aspect is that it refuses to hearken to the words of the Lord. On at least five occasions, the Lord makes this connection (Exodus 7:13, 22; Exodus 8:15, 19; Exodus 9:12). A hard heart closes the ears to the truth and sets the individual up for greater judgment.
