9. Nor is he hereupon to be re-baptized; because the external part was done before, and is not to be twice done; but the internal part which was omitted, is now to be done, not as a part of baptism, (old or new,) but as a part of penitence, for his omission.
Object. If covenanting be a part of baptism, then this person, whose covenant is never a part of his baptism, doth live and die unbaptized.
Answ. As baptism signifieth only the external ordinance, heart covenanting is no part of it, but the profession of it is; and if there was no profession of faith made, by word or sign, the person is unbaptized. But as baptism signifieth the internal part with the external, so he will be no baptized person while he liveth; that is, one that in baptism did truly consent, and receive the spiritual relations to God; but he will have the same thing in another way of God's appointment.
10. When this person is after sanctified, it is by God's performance of the same covenant in specie, which baptism is made to seal, that God doth pardon, justify, and adopt him; but this is not by his past baptism as a cause, but by after grace and absolution. The same covenant doth it, but not baptism; because indeed the covenant or promise saith, Whenever thou believest and repentest, I will forgive thee; but baptism saith, Because thou now believest, I do forgive thee, and wash away thy sin; and maketh present application.
11. So if an infant or adult person live without grace, and at age be ungodly, his baptismal covenant is violated; and his after conversion (or faith and repentance) is neither the fulfilling of God's covenant, nor of his baptism neither. The reason is, because though pardon and adoption be given by that conditional covenant of grace which baptism sealeth, yet so is not that first grace of faith and repentance which is the condition of pardon and adoption, and the title to baptism itself. Else infidels should have right to baptism, and thereby to faith and repentance. But these are only the free gifts of God to the elect, and the fulfilling of some absolute predictions concerning the calling of the elect, and the fulfilling of God's will or covenant to Christ the Mediator, that "He shall see the travail of his soul and be satisfied," and possess those that are given him by the Father.
12. But when the condition of the covenant is at first performed by the parent for the infant, and this covenant never broken on this child's behalf, (notwithstanding sins of infirmity,) in this case the first actual faith and repentance of children as they grow up, is from God's fulfilling of his baptismal covenant with them. The reason is, because that God in that covenant did give them a right of relation to the Holy Spirit in Christ their Head, as their Sanctifier, to operate on them as they are capable. But if they first prove apostates and be after converted, God is disobliged (yea, to hypocrites never was obliged) as to the engagement made by him in baptism; and doth now, 1. Freely give them faith and repentance as a benefactor to his elect, and then, 2. As a covenanter give them pardon and adoption, &c.
13. So to the adult, that truly made the baptismal covenant and never apostatized from it, all the grace that God giveth them through their lives, is his fulfilling of his promises made to them, and sealed by baptism, and a fruit of their baptism. But to hypocrites and apostates it is otherwise, as is before explained.
[291] Rom. vi. 1, 4, 6, 7, &c.
[292] Acts viii. 37, 38; xiii. 20-23.