Q: What do we pray for in the third petition?
A: In the third petition (which is, Thy will be done in earth, as it is in heaven) we pray, That God, by his grace, would make us able and willing to know, obey, and submit to his will in all things, as the angels do in heaven.

(Question CIII of the Westminster Shorter Catechism)

Q: What do we pray for in the first petition?
A: In the first petition (which is, Hallowed be thy name) we pray, That God would enable us and others to glorify him in all that whereby he maketh himself known, and that he would dispose all things to his own glory.

Q: What do we pray for in the second petition?
A: In the second petition (which is, Thy kingdom come) we pray, That Satan’s kingdom may be destroyed; and that the kingdom of grace may be advanced, ourselves and others brought into it, and kept in it; and that the kingdom of glory may be hastened.

(Questions CI and CII of the Westminster Shorter Catechism)

Q: What rule hath God given for our direction in prayer?
A: The whole word of God is of use to direct us in prayer; but the special rule of direction is that form of prayer which Christ taught his disciples, commonly called The Lord’s Prayer.

Q: What doth the preface of the Lord’s prayer teach us?
A: The preface of the Lord’s prayer which is, Our Father which art in heaven, teacheth us to draw near to God with all holy reverence and confidence, as children to a father, able and ready to help us; and that we should pray with and for others.

(Questions XCIX and C of the Westminster Shorter Catechism).