The Orthodox Divine Liturgy presents an introductory phrase in the form of prayer—as is typical in Orthodox Christianity, there is the prayer before the prayer. It goes like this: "And grant, O Lord, that with boldness and without condemnation we may dare to call upon you the Heavenly God as Father and to say."

Why is it a daring thing to say the Lord’s Prayer? Why is it daring to call God "Our Father in heaven"?