What does the Bible say about God's mercy and sacrifice?

In Matthew 9:10-13, Jesus clearly states, 'I will have mercy, and not sacrifice,' highlighting that He seeks genuine repentance from sinners instead of mere ritualistic offerings. This teaching contrasts sharply with religious practices that prioritize human effort and sacrifice. God's mercy is the foundation of salvation, affirming that He does not accept our attempts to earn His favor; rather, He offers grace freely to those who recognize their need for Him. The prophets echoed this sentiment, noting that God desires heartfelt repentance influenced by His grace, not just external compliance with the law.