The Heidelberg Catechism for the Lord’s Day, December 1

119. What is the Lord’s Prayer?

Our Father who art in heaven, Hallowed be Thy name. Thy kingdom come. Thy will be done on earth, as it is in heaven. Give us this day our daily bread. And forgive us our debts, as we forgive our debtors. And lead us not into temptation, but deliver us from evil: for Thine is the kingdom, and the power, and the glory, forever. Amen.

123. What is the second petition?

“Thy kingdom come;” that is, so govern us by Your Word and Spirit, that we submit ourselves to You always more and more; preserve and increase Your Church; destroy the works of the devil, every power that exalts itself against You, and all wicked devices formed against Your Holy Word, until the fullness of Your kingdom come, wherein You shall be all in all.