Bishop Strickland: The Writing Was on the Wall
First, let's take a look at eleven Bible passages concerning baptism; then I will summarize the ten things that they teach us about this glorious sacrament:
1) Acts 2:38-41 (RSV) And Peter said to them, “Repent, and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins; and you shall receive the gift of the Holy Spirit. [39] For the promise is to you and to your children and to all that are far off, every one whom the Lord our God calls to him.” [40] And he testified with many other words and exhorted them, saying, “Save yourselves from this crooked generation.” [41] So those who received his word were baptized, and there were added that day about three thousand souls.
2) 1 Peter 3:18-21 For Christ also died for sins once for all, the righteous for the unrighteous, that he might bring us to God, being put to death in the flesh but made alive in the spirit; in which he went and preached to the spirits in prison, who formerly did not obey, when God’s patience waited in the days of Noah, during the building of the ark, in which a few, that is, eight persons, were saved through water. Baptism, which corresponds to this, now saves you, not as a removal of dirt from the body but as an appeal to God for a clear conscience, through the resurrection of Jesus Christ,
3) Acts 22:16 And now why do you wait? Rise and be baptized, and wash away your sins, calling on his name.’ (cf. 9:17-18)
4) Acts 9:17-18 So Anani’as departed and entered the house. And laying his hands on him he said, “Brother Saul, the Lord Jesus who appeared to you on the road by which you came, has sent me that you may regain your sight and be filled with the Holy Spirit.” And immediately something like scales fell from his eyes and he regained his sight. Then he rose and was baptized, (cf. 22:16)
5) Romans 6:3-4 Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death? We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life.
6) Colossians 2:11-13 In him also you were circumcised with a circumcision made without hands, by putting off the body of flesh in the circumcision of Christ; [12] and you were buried with him in baptism, in which you were also raised with him through faith in the working of God, who raised him from the dead. [13] And you, who were dead in trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses,
7) Galatians 3:26-27 You are all sons of God through faith in Christ Jesus, for all of you who were baptized into Christ have clothed yourselves with Christ.
8) 1 Corinthians 12:13 For by one Spirit we were all baptized into one body — Jews or Greeks, slaves or free — and all were made to drink of one Spirit.
9) Mark 16:16 He who believes and is baptized will be saved; but he who does not believe will be condemned.
10) Titus 3:5 he saved us, not because of deeds done by us in righteousness, but in virtue of his own mercy, by the washing of regeneration and renewal in the Holy Spirit,
11) John 3:5 Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
Therefore, in light of the above data, baptism:
1) is a means from God of salvation (1, 2, 9-11)
2) regenerates us and raises us to a new life, just as Jesus was resurrected (2, 5-7, 10)
3) is God’s instrument to forgive our sins (1, 6)
4) washes away sins; cleanses us from them; thus is a means of sanctification (3)
5) is God’s means of us receiving the indwelling of the Holy Spirit: which no unregenerate person could possess (1, 4, 8, 10-11)
6) brings about inclusion in the rank of saved “souls” (cf. Gal 3:27); membership in the Body of Christ (1, 8)
7) means that we have been buried with Christ, and raised again [see #2 above] (5-6)
8) makes us "sons of God" (7)
9) causes us to be "clothed with Christ" (7)
10) causes us to be "made alive" (6)
Learn much more about baptism and the other six sacraments, and what Catholics believe about them, and why we believe it, on my Baptism and Sacramentalism web page.