What is prayer? – Shorter Westminster Catechism

Prayer is an offering up of our desires unto God, for things agreeable to his will, in the name of Christ, with confession of our sins, and thankful acknowledgement of his mercies.

Shorter Westminster Catechism

What is required for the worthy receiving of the Lord’s Supper? – Shorter Westminster Catechism

What rule hath God given for our direction in prayer? – Shorter Westminster Catechism