We who get mercy – and we get a lot of mercies – must give mercy – and we must likewise give a lot of that. In the end we will be judged…and the mercy will be dispensed to us….in a manner similar to how we dispensed mercy in our own lives. That is what Jesus says. If you hate someone, you better get that worked out here and now. Forgive from your heart. We have no choice….if we want eternal life and some reasonable level of peace in this life.