Well, in our First Reading (2 Samuel 5:1-3), the elders of Israel had observed correctly that David was already functioning as their true shepherd. So their selection and "anointing" of David to be their permanent king was just a formality, recognising the reality of what already existed. But it is important to notice one small detail in this story: the elders voluntarily came to David; they sought him out, to be their king. They knew that their human salvation rested in him as their shepherd.
Then, in the Gospel (Luke 23:35-43) the scene travels one thousand years later to Calvary. The King of the Universe has humbled himself to become a human person like us (in all ways except sin, of course). As St. Paul would put it, he "emptied himself" of his divinity to share in our humanity (Philippians 2:7). He became our "Good Shepherd." As Jesus himself told us, only the sick need a physician: "I did not come to call the righteous but sinners" (Mark 2:17b). That is all of us! Our eternal salvation depends on Jesus alone, and our faith in Him!
So now this divine physician reigns from the cross, with an inscription over his head, "This is the King of the Jews". The rulers and the soldiers are mocking him, as did one of the thieves hanging on another cross beside Jesus. But on a third cross hangs a third man, the one we call the "good" thief. By the grace of God he recognised the innocence and reality of who Jesus was, and—like the elders in the First Reading—sought him out by expressing his faith and requesting salvation. That movement toward Jesus, the King of the Universe, earnt him Paradise. It is one of the greatest ironies of all time that it was a convicted criminal who recognised who Jesus really was. And of course, the inscription on the cross about Jesus' kingship was done in mockery, whereas the paradox was that it spoke the truth!
KNOW YOUR CATECHISM!
CCC 2616, 1021 reminds us that Jesus always hears and responds favorably to the prayer of faith expressed in words directed to him. Tell him right now what you believe, and what you desire from Him! Jesus is quite clear in his response to the "good" thief about the final destiny of our soul, and the New Testament affirms what our final judgment will be in
relation to our works and faith.
“CCC” Catechism of the Catholic Church: -
Online at: http://www.scborromeo.org/ccc/ccc_toc2.htm.
NRSV bible version http://www.devotions.net/bible/00bible.htm