Peter approached Jesus and asked him, "Lord, if my brother sins against me, how often must I forgive him? As many as seven times?" Jesus answered, "I say to you, not seven times but seventy-seven times.¨ (Mt 18:21-35)
https://bible.usccb.org/bible/readings/031423.cfm
As Peter discovers, it´s risky asking Jesus questions. Forgiveness is not optional—it is rather the heart of the gospel that Jesus preaches and lives.