PM sermons are preceded by a Confessional, Catechism, or Historic Creed lesson. Usually 5 minutes or so. WLC 159-160: Q159: How is the word of God to be preached by those that are called thereunto? A159: They that are called to labor in the ministry of the word, are to preach sound doctrine, diligently, in season and out of season; plainly, not in the enticing words of man's wisdom, but in demonstration of the Spirit, and of power; faithfully, making known the whole counsel of God; wisely, applying themselves to the necessities and capacities of the hearers; zealously, with fervent love to God and the souls of his people; sincerely, aiming at his glory, and their conversion, edification, and salvation. Q160: What is required of those that hear the word preached? A160: It is required of those that hear the word preached, that they attend upon it with diligence, preparation, and prayer; examine: What they hear by the scriptures; receive the truth with faith, love, meekness, and readiness of mind, as the word of God; meditate, and confer of it; hide it in their hearts, and bring forth the fruit of it in their lives.