In Luke 15:1-7, Jesus tells a parable about a shepherd leaving 99 sheep to find one lost sheep, revealing God's heart for the lost. Speaking to both sinners and religious elites, Jesus challenges the Pharisees' exclusionary attitude. As a rabbi, Jesus redefined spiritual leadership from mastery to mercy, choosing disciples others rejected. The parable demonstrates that God actively pursues the lost, celebrates their return, and values restoration over religious conformity. Heaven rejoices more over one sinner who repents than over 99 who need no repentance, calling us to align our hearts with this divine celebration.