“And when you stand praying, if you hold anything against anyone, forgive him, so that your Father in heaven may forgive you your sins.” Mark 11:25 (NIV) “But I tell you who hear me: Love your enemies, do good to those who hate you, bless those who curse you, pray for those who mistreat you. If someone strikes you on one cheek, turn to him the other also.” Luke 6:27-29 (NIV) “Be merciful, just as your Father is merciful.” Luke 6:36 (NIV) “Do not judge, and you will not be judged. Do not condemn, and you will not be condemned. Forgive, and you will be forgiven.” Luke 6:37 (NIV)
Elsewhere, it is said, "Then Peter came to Him and said, “Lord, how often shall my brother sin against me, and I forgive him? Up to seven times?” Jesus said to him, “I do not say to you, up to seven times, but up to seventy times seven. Matthew 18:21-22 (NKJV)
Jesus asked for God's forgiveness of those who crucified him. "And Jesus said, 'Father, forgive them, for they know not what they do.'" Luke 23: 34 (ESV)