He would not go in - Luke 15:28
The elder brother is the dark contrast which heightens the glowing picture of the repentant prodigal; as the gargoyle does the beauty of the angel faces on the cathedral font.
When we look at sin, not in its theological aspects, but in its everyday clothes, we find that it divides itself into two kinds. We find that there are sins of the body and sins of the disposition; or, more narrowly, sins of the passions, including all forms of lust and selfishness, and sins of the temper. The prodigal is the instance in the New Testament of sins of passion - the elder brother of sins of temper. Now we might be disposed to think that the prodigal is the worse sinner of these two; but it is at least worthy of remark that as the story ends, we see him found, forgiven, restored; whilst the elder brother is still outside the house, and an absentee from the feast. Does Christ mean that the ill-tempered murmuring of the Pharisee is more hopeless than the passion of the publican and sinner? We must not press the thought too far; but we may at least ask whether we are harboring, beneath a very respectable, moral exterior, the spirit of the elder brother, who plods daily to work, and is accounted a paragon of filial dutifulness, but is left without the door.
One has made a careful analysis of the ingredients that went to make up that one spiteful speech; they come out thus: jealousy, anger, pride, uncharity, cruelty, self-righteousness, sulkiness, touchiness, doggedness. "His speech, like the bubble escaping to the surface of the pool, betrays the rottenness beneath." Let us carefully read our hearts, lest there be any trace of this spirit in ourselves, when others are pressing into the kingdom with joy.