How do we know Jesus' teachings on mercy are true?

The truth of Jesus' teachings on mercy is evidenced not just in his parables, but also in the way he lived and the grace he extended to sinners. In the parable of the Good Samaritan, we see that Jesus illustrates the law's demand for love and mercy. The Samaritans' actions demonstrate a living expression of God's mercy, contrasting sharply with the self-righteousness of the priests and Levites. Furthermore, scripture affirms that Jesus came to fulfill the law and bring forth a higher understanding of what it means to love God and our neighbor. Thus, his teachings are substantiated by his own life, mission, and purpose—giving assurance of the truth of his messages about mercy.