Today's first reading at Mass was from 1 John 2. Verses 9 & 10 read: "Whoever says he is in the light, yet hates his brother, is still in the darkness. Whoever loves his brother remains in the light, and there is nothing in him to cause a fall." It's clear that if there is still someone you cannot forgive, then you are not in the light yet. When you truly see Christ in everyone, then you are securely in the light. A good test for us to take.