"Approach God daily with these few words"

Martin Luther explains that we have no excuse but to pray the Pater Noster.

After having denounced showy and meaningless prayers, Christ introduced a splendid short prayer of his own. With it, he instructed us on how to pray and what we should pray for. He gave us a prayer that touches upon a variety of needs. By themselves, these needs should compel us to approach God daily with these few easily remembered words. No one can excuse themselves from saying they don't know how to pray or what to pray for.

The Lord's Prayer is the finest prayer that anyone could have ever thought up or that was ever sent from heaven. Because God gave Jesus the words for the prayer and sent him to introduce it, we know beyond a doubt that his prayer pleases God immensely.

Adapted from Reflections on the Lord's Prayer.