Contradiction with Proverbs 14:13
While Luke 15:9 celebrates joy and rejoicing upon finding the lost, Proverbs 14:13 suggests that laughter can mask heartache, indicating that joy may not always be sincere or unalloyed.
Proverbs 14:13: Even in laughter the heart is sorrowful; and the end of that mirth [is] heaviness.
Contradiction with Ecclesiastes 2:1-2
Luke 15:9 emphasizes rejoicing and satisfaction upon recovery, but Ecclesiastes 2:1-2 questions the value of pleasure and laughter, calling them vanity and foolishness.
Ecclesiastes 2:1-2: I said in mine heart, Go to now, I will prove thee with mirth, therefore enjoy pleasure: and, behold, this also [is] vanity.
Contradiction with Isaiah 22:12-13
Luke 15:9 is about celebration in finding what was lost, whereas Isaiah 22:12-13 criticizes people for joy and feasting when repentance and mourning are called for instead.
Isaiah 22:12-13: And in that day did the Lord GOD of hosts call to weeping, and to mourning, and to baldness, and to girding with sackcloth:
Contradiction with Amos 6:4-6
Contrasting the celebration in Luke 15:9, Amos 6:4-6 admonishes those who are at ease and indulge in luxury but disregard the sorrow and ruin of others, suggesting some celebrations are misplaced.
Amos 6:4-6: That lie upon beds of ivory, and stretch themselves upon their couches, and eat the lambs out of the flock, and the calves out of the midst of the stall; [stretch...: or, abound with superfluities]