Matthew 6:9 (BSB)

So then, this is how you should pray: ‘Our Father in heaven, hallowed be Your name.

From Matthew 6. Also in the ESV.

Commentary on Matthew 6:9

• John Calvin (Reformed), Calvin's Commentaries on Matthew 6:9: Matthew 6:9 Do ye therefore pray thus Instead of this Luke says, when ye pray, say: though Christ does not enjoin his people to pray in a prepared form of words, “Combien Christ ne commande pas aux siens en priant de s'attacher scrupuleusement a certains mots;” — “though Christ does not command his people to adhere scrupulously to certain words.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Matthew 6:9-15: When Christ had condemned what was amiss, he directs to do better; for his are reproofs of instruction. Because we know not what to pray for as we ought, he here helps our infirmities, by putting words into our mouths; after this manner therefore pray ye, Mat 6:9.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Matthew 6:9: After this manner therefore pray ye,.... That is, in such a concise and short way, without much speaking and vain repetitions; making use of such like words and expressions as the following: not that Christ meant to pin down his disciples to these express words, and no other; for this prayer is not a strict form, but a pattern of prayer, and a directory to...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Matthew 6:9: Verses 9-13. This passage contains the Lord's prayer, a composition unequalled for comprehensiveness and for beauty. It is supposed that some of these petitions were taken from those in common use among the Jews. Indeed, some of them are still to be found in Jewish writings, but they did not exist in this beautiful combination. This prayer is given as a model.