Heidelberg Catechism – Lord’s Day 45
Q. Why is prayer necessary for Christians?
A. Because it is the chief part of the gratitude which God requires of us, and because God will give his grace and Holy Spirit only to those who sincerely beseech him in prayer without ceasing, and who thank him for these gifts.
Q. What is contained in a prayer which pleases God and is heard by him?
A. First, that we sincerely call upon the one true God, who has revealed himself to us in his Word, for all that he has commanded us to ask of him. Then, that we thoroughly acknowledge our need and evil condition so that we may humble ourselves in the presence of his majesty. Third, that we rest assured that, in spite of our unworthiness, he will certainly hear our prayer for the sake of Christ our Lord, as he has promised us in his Word.
Q. What has God commanded us to ask of him?
A. All things necessary for soul and body which Christ the Lord has included in the prayer which he himself taught us.
Q. What is the Lord’s Prayer?
A. “Our Father in heaven, hallowed be your name. Your kingdom come, your will be done, on earth as it is in heaven. Give us this day our daily bread, and forgive us our debts, as we also have forgiven our debtors. And lead us not into temptation, but deliver us from evil. For yours is the kingdom and the power and the glory, forever. Amen”