Singing Psalm 91 as a Prayer unto the Lord is Powerful; especially with the 10 Strings Davidic Harp.

A.  We can expect God’s Protection when we put our Trust in Him (Psalm 91:1,2)
 
1 He who dwells in the secret place of the Most High
Shall abide under the shadow of the Almighty.
2 I will say of the Lord“He is my refuge and my fortress;
My God, in Him I will trust.”
 
B.  We can expect God’s Deliverance when we set our Love upon Him (Psalm 91:14)
 
14 Because he has set his love upon Me, therefore I will deliver him;
I will set him on high, because he has known My name.
 
C.  We can expect God’s Answer when we Call upon Him (Psalm 91:15,16)
 
15 He shall call upon Me, and I will answer him;
will be with him in trouble;
I will deliver him and honor him.
16 With long life I will satisfy him,
And show him My salvation.”
 
You can watch the playing and listen to Psalm 91 at