1)
When will David sing?
1.
Rashi: When I will escape them, I will sing of Your strength, in the morning.
2.
Radak: When You will show to me Your strength, and take vengeance for me, I will sing of Your strength. I will sing every morning about Your Chesed with me.
3.
Malbim: I rise at night to sing of Your strength the entire night. I will sing in the morning Your Chesed, that You were a refuge for me; You helped me to flee.