In the Samyutta Nikāya the Buddha says ... - Dhamma by Ajahn Jayasāro
In the Samyutta Nikāya the Buddha says:
“Unimaginable, bhikkhus, is a beginning to the round of rebirths. For beings obstructed by ignorance and fettered by craving, migrating and going the round of rebirths, a starting point is not to be found. It is not easy, bhikkhus, to find a being who has not formerly been one's mother ... been one's father ... one's brother ... sister ... son ... daughter during this long long time.”
- S.N. 15. 14-19
And if this is true, how can we not forgive those that hurt us?
Source: