Part of my bedtime routine when I was a child was to say my prayers with my parents and then confess any wrong I had done during the day. Sometimes I made my parents sad, and myself, too, but my confessions were always followed by immediate forgiveness, by assurances of love, the love of my parents, the love of God. I am grateful for the teaching given me by my parents, because it grounded me in an awareness of God's all-embracing love.
~ from THE ROCK THAT IS HIGHER by Madeleine L'Engle
Dom Henri le Saux, a French Benedictine monk, suggests that the sacred sound "OM" can be used by anyone:
More than any particular name of Divinity, OM conveys the ineffability and the depths of the divine Mystery. It bears no distinct meaning ... It does not even recall any mythological or semi-historic event. It is a kind of inarticulate exclamation uttered when you are confronted with the Presence in yourself and around yourself.
You could say that OM is a name of God which is not a name.