And Philip said, if thou believest with all thine heart, thou mayest,.... Intimating, that if he did not believe, he had no right to that ordinance; though he was a proselyte to the Jewish religion, a serious and devout man, and was employed in a religious way, when Philip came up to him, and was very desirous of being instructed in the knowledge of divine things; and yet notwithstanding all this, he had no right to the ordinance of baptism, unless he had faith in Christ, and made a profession of it; nor would Philip administer it to him without it; from whence it appears, that faith in Christ, and a profession of it, are necessary prerequisites to baptism: and this faith should not be a mere historical and temporary faith, nor a feigned one, but a believing in Christ with the heart unto righteousness; or such a faith by which a soul relinquishes its own righteousness, and looks and goes unto Christ for righteousness, life, and salvation, and rests and relies upon him for them; and it should be a believing in him with the whole heart, which does not design a strong faith, or a full assurance of faith, but an hearty, sincere, and unfeigned one, though it may be but weak, and very imperfect.
And that this is necessary to baptism is manifest, because without this it is impossible to please God; nor can submission and obedience to it be acceptable to him: nor indeed can the ordinance be grateful and pleasing to unbelievers; for though it is a command that is not grievous, and a yoke that is easy, yet it is only so to them that believe; nor can any other see to the end of this ordinance, or behold the burial, and resurrection of Christ represented by it, or be baptized into his death, and partake of the benefits of it; and besides, whatsoever is not of faith is sin.
And he answered and said, I believe that Jesus Christ is the Son of God: which though a short, is a very comprehensive summary of the articles of faith respecting the person, offices, and grace of Christ; as that he is a divine person, truly and properly God, the only begotten of the Father, of the same nature with him, and equal to him; that he existed from all eternity, as a divine person with him, and distinct from him; and that he is the Christ, the anointed of God, to be prophet, priest, and King; and is Jesus, the only Saviour of lost sinners, in whom he trusted and depended alone for righteousness, life, and salvation.