Objection: There is no command or example in the Bible of the baptism of the infants of believers.
1. The inclusion of infants was the default expectation of the Jews, and even the Gentiles, due to the order of nature, the way God had worked in the past, and God’s earlier commands regarding circumcision. It would be the exclusion of infants that would have required a more explicit statement or example.
2. While infants are not explicitly mentioned, in principle they would be included when the Bible speaks of the believer’s “household” which was baptized (Acts 16:15, 31-34). The inclusion of households also demonstrates continuity with Old Testament practice.
3. There is an explicit example of infants being baptized. In 1 Corinthians 10:1-2, all Israel is described as being “baptized.”
4. It teaches it by deduction, as I have observed in my prior post. It can be deduced in several ways. For example: (premise 1) the disciples of Christ ought to be baptized (Matt. 28:28-20); (premise 2) the children of believers are disciples of Christ, being brought up in the nurture and admonition of the Lord (Eph. 6:4); (conclusion) therefore they ought to be baptized. Similar deductions can be made based on their inclusion in the covenant and in the visible church.
Objection: Baptism is a person’s testimony of their choice to believe, and infants are incapable of doing this.
Baptism is a sign of God’s promise and our engagement to be God’s. Scripture does not say that it is a testimony of our faith to the world. It is a sign and seal of God’s promise, of his grace through Christ, of washing and regeneration. It is a sign to us, to be received by us all our lives.
Objection: Baptism is no good without faith, therefore only professing believers ought to be baptized. The pattern is repent, believe, and be baptized.
This is the same with circumcision: Abraham repented by turning form idols to follow God, believed, and then was given circumcision in chapter 17. Circumcision was a sign and seal of the righteousness he had by faith (Rom. 4:11). But it did not follow that the sign could not be applied to the believer’s offspring. The same is true of baptism. The pattern is repent, believe, and be baptized for adult converts, but then the same sign should be applied to their children even through they cannot yet make a profession of faith.
Objection: Baptism must be by immersion, and infants can’t be immersed, so therefore it must be for those who are older.
1. Infants can be immersed. Eastern Orthodox churches practice baptism by immersion and baptize infants in that manner. See here. Even if immersion was required, it wouldn't be an argument against infant baptism.
2. Scripture does not teach that baptism must be by immersion. It must simply be washing with water. The word baptism means “washing” and can refer to immersion, sprinkling, or pouring (Mark 7:4, Heb. 9:10). Sprinkling is used as a symbol of God’s cleansing and regenerating work in Ezek. 36:25, Is. 52:15, Heb. 10:22, and the Spirit is described as being “poured out” on God’s people in a way connected with baptism (Acts 2, 10, Titus 3:5-6).
3. The earliest record of the mode of baptism we have outside the Bible is found in the Didache, which allows for both immersion and pouring. “…baptize…in running water. But if you have no running water, then baptize in some other water; and if you are not able to baptize in cold water, then do so in warm. But if you have neither, then pour water on the head three times in the name of the Father and Son and Holy Spirit” (7.1-3).
Objection: The new covenant only includes the regenerate, as Jeremiah 31:31-34 says.
1. This still does not help us determine who to baptize, since we cannot see infallibly who is regenerate.
2. The New Testament sees the threat of apostasy by (unregenerate) visible saints, who were sanctified by the blood of the covenant, as a reality in the New Testament as it was in the Old Testament (Hebrews 10:26-31, 12:15-17, 1 Cor. 10).
3. Jeremiah 31:31-34 does not say that the new covenant will achieve pervasive regeneration among God’s people by setting new standards for entrance. Rather, it says it will achieve this by God writing the law on their hearts. In a parallel passage in Ezekiel 36:25-27, it is said this is done by the Spirit. It is a promise of greater blessings, not of greater restrictions.
4. Deuteronomy 30:1-6 describes the same idea as Jeremiah 31:31-34, that God will internally renewing his people following captivity, and there God explicitly includes the children, promising to “circumcise your heart and the heart of your offspring.”
Objection: People who are baptized as infants don’t take seriously the need to repent and believe.
Sadly, this is sometimes true. I have found this objection especially from those with a Roman Catholic or mainline Protestant background, but nominalism is a threat in every church. It was true in the Old Testament, and it was true in the New Testament. But presumption was not addressed in the Bible by restricting circumcision or baptism to mature believers. The prophets and apostles addressed it by exhorting all the church to repent and believe, to be circumcised in the heart, not merely in the flesh. In fact, baptism ought to give more reason to earnestly train our children in the faith and call them to embrace the covenant, to live up to their baptismal identity. But the best way to address this practical objection is by example. May we who practice infant baptism not separate it from the duty to raise up our children in the nurture and admonition of the Lord, encouraging them to embrace Christ and calling upon God to grant the reality symbolized in baptism.