2 Samuel 9:1 KJV
And David said, Is there yet any that is left of the house of Saul, that I may shew him kindness for Jonathan's sake?
It has been years, perhaps a decade, since Jonathan had died in battle along side his father.
The years had been tumultuous ones for David. Battles had been fought with the house of Saul and their followers. But now David has ascended to lead all of Israel. He is not bitter and vengeful. Neither is he forgetful. Jonathan had been a loyal friend. And David desired to show kindness for Jonathan's sake.
It is a matter of the believer's heart that he cares for the souls of others. The believer has been given a new heart and new nature; one that longs to reach out and see others blessed, even those who have done them painfully. It is in their nature to seek others to which they may show kindness.