If you do not make peace with your brother, then how will you ask Me for forgiveness? I am your Master; I command you and you do not heed Me. You are a servant; how dare you bring Me a prayer, or a sacrifice, or first fruits of your harvest, if you bear malice toward anyone? If you turn your face from your brother, so shall I turn Mine eyes from your prayer and from your gift.

St. Ephraim the Syrian
A Spiritual Psalter, Psalm 33