Here are the NT occurrences of the noun “baptism” and the verb “baptize.” Obviously by listing the word and its congnates alone, I don’t list every occurrence of the concept. Also, I did my search in the Greek text, so the word “Baptize” won’t show up in every English verse.
Matthew 3:7 But when he saw many of the Pharisees and Sadducees coming to where he was baptizing, he said to them: “You brood of vipers! Who warned you to flee from the coming wrath?
Matthew 3:11 “I baptize you with water for repentance. But after me will come one who is more powerful than I, whose sandals I am not fit to carry. He will baptize you with the Holy Spirit and with fire.
Matthew 3:14 But John tried to deter him, saying, “I need to be baptized by you, and do you come to me?”
Matthew 3:16 As soon as Jesus was baptized, he went up out of the water. At that moment heaven was opened, and he saw the Spirit of God descending like a dove and lighting on him.
Matthew 21:25 John’s baptism– where did it come from? Was it from heaven, or from men?” They discussed it among themselves and said, “If we say, ‘From heaven,’ he will ask, ‘Then why didn’t you believe him?’
Matthew 28:19 Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,
Mark 7:4 When they come from the marketplace they do not eat unless they wash. And they observe many other traditions, such as the washing of cups, pitchers and kettles.)
Mark 10:38 “You don’t know what you are asking,” Jesus said. “Can you drink the cup I drink or be baptized with the baptism I am baptized with?” 39 “We can,” they answered. Jesus said to them, “You will drink the cup I drink and be baptized with the baptism I am baptized with,
Mark 16:16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.
Luke 3:16 John answered them all, “I baptize you with water. But one more powerful than I will come, the thongs of whose sandals I am not worthy to untie. He will baptize you with the Holy Spirit and with fire.
Luke 7:29 (All the people, even the tax collectors, when they heard Jesus’ words, acknowledged that God’s way was right, because they had been baptized by John.
Luke 12:50 But I have a baptism to undergo, and how distressed I am until it is completed!
John 1:31 I myself did not know him, but the reason I came baptizing with water was that he might be revealed to Israel.”
John 1:33 I would not have known him, except that the one who sent me to baptize with water told me, ‘The man on whom you see the Spirit come down and remain is he who will baptize with the Holy Spirit.’
Acts 1:5 For John baptized with water, but in a few days you will be baptized with the Holy Spirit.”
Acts 2:38 Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.
Acts 10:47 “Can anyone keep these people from being baptized with water? They have received the Holy Spirit just as we have.” 48 So he ordered that they be baptized in the name of Jesus Christ. Then they asked Peter to stay with them for a few days.
Acts 19:4 Paul said, “John’s baptism was a baptism of repentance. He told the people to believe in the one coming after him, that is, in Jesus.”
Acts 22:16 And now what are you waiting for? Get up, be baptized and wash your sins away, calling on his name.’
Romans 6:3 Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death? 4 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.
1 Corinthians 1:17 For Christ did not send me to baptize, but to preach the gospel– not with words of human wisdom, lest the cross of Christ be emptied of its power.
1 Corinthians 12:13 For we were all baptized by one Spirit into one body– whether Jews or Greeks, slave or free– and we were all given the one Spirit to drink.
Galatians 3: 26 You are all sons of God through faith in Christ Jesus, 27 for all of you who were baptized into Christ have clothed yourselves with Christ.
Ephesians 4:5 one Lord, one faith, one baptism;
Colossians 2:12 having been buried with him in baptism and raised with him through your faith in the power of God, who raised him from the dead.
Hebrews 6:2 instruction about baptisms, the laying on of hands, the resurrection of the dead, and eternal judgment.
Hebrews 9:10 They are only a matter of food and drink and various ceremonial washings– external regulations applying until the time of the new order.
1 Peter 3:21 and this water symbolizes baptism that now saves you also– not the removal of dirt from the body but the pledge of a good conscience toward God. It saves you by the resurrection of Jesus Christ,
Revelation 19:13 He is dressed in a robe dipped in blood, and his name is the Word of God.