Brief Instruction in the Worship of God

Question 17 — Which are the principal institutions of the gospel to be observed in the worship of God?

Answer — ^aThe calling, gathering, and settling of churches, with their officers, as the seat and subject of all other solemn instituted worship; ^bprayer, with thanksgiving; ^csinging of psalms; ^dpreaching the word; ^eadministration of the sacraments of baptism and the supper of the Lord; ^fdiscipline and rule of the church collected and settled; most of which have also sundry particular duties relating unto them, and subservient unto their due observation.
^aMatt. xxviii. 19, 20; Acts ii. 41, 42; 1 Cor. xii. 28; Eph. iv. 11, 12; Matt. xviii. 17, 18; 1 Cor. iv. 17, vii. 17; Acts xiv. 23; Titus i. 5; 1 Tim. iii. 15.
^b1 Tim. ii. 1; Acts vi. 4, xiii. 2, 3.
^cEph. v. 19; Col. iii. 16.
^d2 Tim. iv. 2; Acts ii. 42; 1 Cor. xiv. 3; Acts vi. 4; Heb. xiii. 7.
^eMatt. xxviii. 19, xxvi. 26, 27; 1 Cor. xi. 23.
^fMatt. xviii. 17–19; Rom. xii. 6–8; Rev. ii., iii.

Explication — These things, being all of them afterward to be 478spoken unto severally and apart, need not here any particular explication. They are the principal heads wherein gospel worship consisteth, and whereunto the particular duties of it may be reduced.