The Jesus Prayer is very simple, but so strong in same time. It’s:
“Lord Jesus Christ Son of God, have mercy on me a sinner!” or just:“Lord Jesus Christ, have mercy on me !”
The Jesus Prayer according to numerous Church Fathers is “essential” to our spiritual growth. The Jesus Prayer proclaims our faith and humbles us by asking mercy for our sinfulness. The Jesus Prayer is thought to be as old as the Church itself.
The Jesus Prayer, says Metropolitan Anthony Bloom, “more than any other,” helps us to be able to “stand in God’s presence.” This means that the Jesus Prayer helps us to focus our mind exclusively on God with “no other thought” occupying our mind but the thought of God. At this moment when our mind is totally concentrated on God, we discover a very personal and direct relationship with Him.