The truth of God is the foundation of all true religion. This is why the first commandment in Exodus 20, in order to love God with all your heart, soul and mind, is to have no other gods before him, and to take God as your God, in the way God has revealed himself. God has deposited his truth, his will, his word, into the hands of the church (into the very heart of the church). It has been delivered to them. "...that ye should earnestly contend for the faith which was once delivered unto the saints," (Jude 1:3).
Maynard's exposition of the "truth" comes from Proverbs 23:23, "Buy the truth and sell it not." He gives two propositions that serve as his doctrines: 1.) An affirmative, or precept, Buy Truth, and, 2.) A negative, or prohibition, Sell it not. In this, Maynard shows 1. What is this Truth which we are required to buy? 2. What does it mean to buy Truth? 3. From whom must it be bought? 4. Why is this purchase necessary?
In his second address, he covers Philippians 3:21, "According to the working whereby he is able even to subdue all things unto himself." He will argue for Christ's kingship, that the work and merit of the Savior is both a current reality in subduing his enemies, and a future reality in its completion. In light of this, he argues that if the Lord has honored you by adopting you into his family, it behooves you to render your absolute service to the King of heaven. Not only that you would see the delights surrounding the cross of Christ, but also the wonders surrounding the crown of the King. Not only that you would love the sweet Savior, but also that you would heed his commands and his truth as the commanding King.