Though the first part of this book is little more than an explication of the christian covenant with God, yet being here to speak of baptism as a part of God's worship, it is needful that I briefly speak also of the covenant itself.
_Direct._ I. It is a matter of great importance that you well understand the nature of the christian covenant, what it is. I shall therefore here briefly open the nature of it, and then speak of the reasons of it; and then of the solemnizing it by baptism, and next of our renewing it, and lastly of our keeping it.
[Sidenote: The covenant what.]
The christian covenant is a contract between God and man, through the mediation of Jesus Christ, for the return and reconciliation of sinners unto God, and their justification, adoption, sanctification, and glorification by him, to his glory.
Here we must first consider, who are the parties in the covenant. 2. What is the matter of the covenant on God's part. 3. What is the matter on man's part. 4. What are the terms of it propounded on God's part. 5. Where and how he doth express it. 6. What are the necessary qualifications on man's part. 7. And what are the ends and benefits of it.
I. The parties are God and man: God the Father, Son, and Holy Ghost on the one part, and repenting, believing sinners on the other part. Man is the party that needeth it; but God is the party that first offereth it. Here note, 1. That God's part of the covenant is made universally and conditionally with all mankind, (as to the tenor exacted,) and so is in being before we were born. 2. That it is not the Father, Son, and Holy Ghost, considered simply as persons in the Godhead; but as related to man for the ends of the covenant. 3. That it is only sinners that this covenant is made with, because the use of it is for the restoration of those that broke a former covenant in Adam. It is a covenant of reconciliation, and therefore supposeth an enmity antecedent. 4. When I say that it is repenting and believing sinners that are the party, I mean, (1.) That taking the covenant in its first act, it is repentance and faith themselves that are the act, and are our very covenanting. (2.) But taking the covenant in its external expression, so it is a repenting, believing sinner that must take it, it being but the expression of his repentance and faith, by an explicit contract with God. 5. Note, that though God's covenant be by one universal act, (of which more anon,) yet man's is to be made by the several acts of the individual persons each one for himself, and not by the acts of societies only.
II. The matter of the covenant on God's part is in general, that he will be our God: more particularly, that God the Father will be our reconciled God and Father in Jesus Christ; that God the Son will be our Saviour; and God the Holy Ghost will be our Sanctifier. And the relation of a God to us essentially containeth these three parts: 1. That as on the title of creation and redemption he is our Owner, so he doth take us as his own peculiar people. 2. That as he hath title to be our absolute King or Governor, so he doth take us as his subjects. 3. That he will be our grand Benefactor and felicity, or our most loving Father (which compriseth all the rest). And as he will be thus related to us, so he will do for us all that these relations do import. As, 1. He will do all that belongeth to a Creator for his creature, in our preservation and supplies. 2. He will save us from our sins, and from his wrath and hell. 3. And he will sanctify us to a perfect conformity to our Head. Also, 1. He will use and defend us as his own peculiar ones. 2. He will govern us by a law of grace and righteousness. 3. He will make us fully happy in his love for ever.