Our Approach to God in Prayer

Ques. 120. Why hath God commanded us to address God thus: "Our Father"?  Ans. That immediately, in the very beginning of our prayer, he might excite in us a childlike reverence for, and confidence in God, which are the foundation of our prayer; namely, that God is become our Father in Christ, and will much less deny us what we ask of him in true faith, than our parents will refuse us earthly things.  Ques. 121. Why is here added, "Which art in heaven"?  Ans. Lest we should form any earthly...