Acts 8:37

If thou believest, &c. The Scripture many times mentions one disposition, when others no less necessary are supposed, as here a sorrow for sins, a firm hope, love of God, &c. (Witham) — Faith is thus seen to be a necessary predisposition in the adult, for the reception of baptism. They must answer for themselves; but infants are baptized in the faith of the Church. Their sponsors, who receive them from the font, answer for them. (Denis the Carthusian) — And as the defilement was not personal, but that of others, so are they purified by the faith of others.

2. The fair declaration which Philip made him of the terms upon which he might have the privilege of baptism (v. 37): "If thou believest with all thy heart, thou mayest; that is, If thou believest this doctrine which I have preached to thee concerning Jesus, if thou receivest the record God has given concerning him, and set to thy seal that it is true." He must believe with all his heart, for with the heart man believeth, not with the head only, by an assent to gospel truths in the understanding; but with the heart, by a consent of the will to gospel terms. "If thou do indeed believe with all thy heart, thou art by that united to Christ, and, if thou give proofs and evidences that thou dost so, thou mayest by baptism be joined to the church."

1. The modest proposal which the eunuch made of himself for baptism (v. 36): As they went on their way, discoursing of Christ, the eunuch asking more questions and Philip answering them to his satisfaction, they came unto a certain water, a well, river, or pond, the sight of which made the eunuch think of being baptized. Thus God, by hints of providence which seem casual, sometimes puts his people in mind of their duty, of which otherwise perhaps they would not have thought. The eunuch knew not how little a while Philip might be with him, nor where he might afterwards enquire for him. He could not expect his travelling with him to his next stage, and therefore, if Philip think fit, he will take the present convenience which offers itself of being baptized: "See, here is water, which perhaps we may not meet with a great while again; what doth hinder me to be baptized? Canst thou show any cause why I should not be admitted a disciple and follower of Christ by baptism?" Observe, (1.) He does not demand baptism, does not say, "Here is water and here I am resolved I will be baptized;" for, if Philip have any thing to offer to the contrary, he is willing to waive it for the present. If he think him not fit to be baptized, or if there be any thing in the institution of the ordinance which will not admit such a speedy administration of it, he will not insist upon it. The most forward zeal must submit to order and rule. But, (2.) He does desire it, and, unless Philip can show cause why not, he desires it now, and is not willing to defer it. Note, In the solemn dedicating and devoting of ourselves to God, it is good to make haste, and not to delay; for the present time is the best time, Ps 119 60. Those who have received the thing signified by baptism should not put off receiving the sign. The eunuch feared lest the good affections now working in him should cool and abate, and therefore was willing immediately to bind his soul with the baptismal bonds unto the Lord, that he might bring the matter to an issue.

Verses 26-40 Philip was directed to go to a desert. Sometimes God opens a door of opportunity to his ministers in very unlikely places. We should study to do good to those we come into company with by travelling. We should not be so shy of all strangers as some affect to be. As to those of whom we know nothing else, we know this, that they have souls. It is wisdom for men of business to redeem time for holy duties; to fill up every minute with something which will turn to a good account. In reading the word of God, we should often pause, to inquire of whom and of what the sacred writers spake; but especially our thoughts should be employed about the Redeemer. The Ethiopian was convinced by the teaching of the Holy Spirit, of the exact fulfilment of the Scripture, was made to understand the nature of the Messiah's kingdom and salvation, and desired to be numbered among the disciples of Christ. Those who seek the truth, and employ their time in searching the Scriptures, will be sure to reap advantages. The avowal of the Ethiopian must be understood as expressing simple reliance on Christ for salvation, and unreserved devotion to Him. Let us not be satisfied till we get faith, as the Ethiopian did, by diligent study of the Holy Scriptures, and the teaching of the Spirit of God; let us not be satisfied till we get it fixed as a principle in our hearts. As soon as he was baptized, the Spirit of God took Philip from him, so that he saw him no more; but this tended to confirm his faith. When the inquirer after salvation becomes acquainted with Jesus and his gospel, he will go on his way rejoicing, and will fill up his station in society, and discharge his duties, from other motives, and in another manner than heretofore. Though baptized in the name of the Father, Son, and Holy…