Q. 108. What are the duties required in the second commandment?
A. The duties required in the second commandment are, the receiving, observing, and keeping pure and entire, all such religious worship and ordinances as God hath instituted in his Word;518 particularly prayer and thanksgiving in the name of Christ;519 the reading, preaching, and hearing of the Word;520 the administration and receiving of the sacraments;521 church government and discipline;522 the ministry and maintainance thereof;523 religious fasting;524 swearing by the name of God;525 and vowing unto him;526 as
also the disapproving, detesting, opposing all false worship;527
and, according to each one’s place and calling, removing it, and all monuments of idolatry.528
527 Acts 17:16-17. Now while Paul waited for them at Athens, his spirit was stirred in him, when he saw the city wholly given to idolatry. Therefore disputed he in the synagogue with the Jews, and with the devout persons, and in the market daily with them that met with him. Psalm 16:4. Their sorrows shall be multiplied that hasten after another god: their drink offerings of blood will I not offer, nor take up their names into my lips.
528 Deuteronomy 7:5. But thus shall ye deal with them; ye shall destroy their altars, and break down their images, and cut down their groves, and burn their graven images with fire. Isaiah 30:22. Ye shall defile also the covering of thy graven images of silver, and the ornament of thy molten images of gold: thou shalt cast them away as a menstruous cloth; thou shalt say unto it, Get thee hence.
(
Westminster Larger Catechism Q&A 108)