Yehudah Glick of Shalom Jerusalem teaches Psalms 7 regarding things that are in David’s heart.
In this Psalm, David is sharing his deepest thoughts about Saul who was chasing him at the time. David feels that he did not deserved to be chased by Saul. With a cry out, King David claims that he is not guilty and have not done any of the things that he was accused of.
Grounded on this reason, King David asks the God of Justice to arise and make known to the world that he is a just Judge and therefore evil will fall and the just, like King David, will be proven innocent.