ProphesyKid,
Yes. The baby doesn't have to do anything, yet. God alone is the active person in baptism. Faith is required. In the case of infant baptism it can be vicarious faith of the parents. When the person reaches adulthood they make their adult decision. This ,may not make sense to you if you have been brought up in certain traditions but this is the theology in most of the Church, Eastern, Roman and Anglican as well as much of protenstanism. Traditionally baptism, like circumcision, brings one into God's covenant of grace, for Christians this means being part of the body of Christ.
I copied below part of an outline I did for a class. There is more if you are interested.
1. The Children of believers are included in the Covenant of grace. They were included in the Gods Covenant with Abraham. It was to you and your descendants and included all male infants (Genesis 17:9-14). The new Covenant prophesized by Jeremiah (Jeremiah 31:31) and declared by Jesus (Mathew 26:28) is the fulfillment of the one made to Abraham. The signs changed from circumcision to water but both represent initiation into the Covenant of Grace. Part of the newness is that it now applies to female children as well as male.
2. Consider Christs statements regarding children Suffer the little children to come unto me and do not hinder them for of such belongs the Kingdom of God. (Mark 10:14-16, Mathew 19:13-15, Luke 18:15-17)
3. We find the same attitude in the practice of the Apostles.
§ Peter declares the promise is to hearers and their children Acts 2:38-41
§ Baptism of the household of Lydia. Acts 16:15, 33
§ Baptism of the household of Stephanus. 1 Corinthians 1:16
§ Children of mixed marriage are Holy through faith of the parent. 1 Corinthians 7:7-14
§ Typological references to baptism as the Ark. 1 Peter 3:21 and as circumcision not made with hands (Colossians 2:11), both include children.
Christ in the great commission (Mathew 28:18ff) implies the inclusion of children in baptism by using the word nations which includes children.
1.1. Biblical Foundations
§ And God said to Abraham: As for you, you shall keep My covenant, you and your descendants after you throughout their generations. This is My covenant which you shall keep, between Me and you and your descendants after you: Every male child among you shall be circumcised; and you shall be circumcised in the flesh of your foreskins, and it shall be a sign of the covenant between Me and you. He who is eight days old among you shall be circumcised, every male child in your generations, he who is born in your house or bought with money from any foreigner who is not your descendant. He who is born in your house and he who is bought with your money must be circumcised, and My covenant shall be in your flesh for an everlasting covenant. And the uncircumcised male child, who is not circumcised in the flesh of his foreskin, that person shall be cut off from his people; he has broken My covenant.
§But when Jesus saw it, He was greatly displeased and said to them, Let the little children come to Me, and do not forbid them; for of such is the kingdom of God. Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it. And He took them up in His arms, laid His hands on them, and blessed them.Mark 10:14-16
§ And when she and her household were baptized, she begged us, saying, If you have judged me to be faithful to the Lord, come to my house and stay. So she persuaded us.Acts 16:15
§And he took them the same hour of the night and washed their stripes. And immediately he and all his family were baptized.Acts 16:33
§Yes, I also baptized the household of Stephanas. Besides, I do not know whether I baptized any other.
1 Corinthians 1:16
§There is also an antitype which now saves usbaptism (not the removal of the filth of the flesh, but the answer of a good conscience toward God), through the resurrection of Jesus Christ, 1 Peter 3:21
§In Him you were also circumcised with the circumcision made without hands, by putting off the body of the sins of the flesh, by the circumcision of Christ Colossians 2:11
And Jesus came and spoke to them, saying, All authority has been given to Me in heaven and on earth. Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all things that I have commanded you; and lo, I am with you always, even to the end of the age. Amen. Mathew 28:18-20