Authority for truth is the right to determine what the truth is.
David is in charge. As such, it is a day of forgiveness and mercy (Shimei and Mephibosheth). It is a day of grace and blessing (Barzillai and Chimham).
If God be for us, who can be against us?
In this chapter, we learn three great lessons: 1) your sin will surely catch up with you and find you out; 2) the judgment of sin is more than you can ever imagine; 3) God shows great mercy to those who truly repent and turn to Him.
David is at the height of his reign with multiple victories on the field, and a great spiritual victory when he lifts the grandson of his enemy to a place of blessing and prominence.
