The saints in Rome must have been baptized prior to receiving Paul’s letter: Romans 6:3 – “Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death?”
The folks in the church at Corinth were baptized in Jesus’ name: 1st Corinthians 1:13 – “Has Christ been divided? Paul was not crucified for you, was he? Or were you baptized in the name of Paul?”
The churches of Galatia had clothed themselves with Christ through baptism: Galatians 3:26-27 – “For 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.”
The church in Ephesus understood the need for the one baptism from their beginning in Acts 19:1-7: Ephesians 4:5 – “…one Lord, one faith, one baptism…”
The brethren at Philippi had apparently conformed to Jesus death & resurrection through baptism just as Paul: Philippians 3:10-11 – “…that I many know Him and the power of His resurrection and the fellowship of His sufferings, being conformed to His death, in order that I may attain to the resurrection from the dead.”
The saints in Colossae knew about spiritual circumcision through their baptism: Colossians 2:11-12 – “…and in Him you were also circumcised with a circumcision made without hands, in the removal of the body of the flesh by the circumcision of Christ; having been buried with Him in baptism, in which you were also raised up with Him through faith in the working of God, who raised Him from the dead.”
Titus & those to whom he ministered had submitted to baptism: Titus 3:5-7 – “… He saved us, not on the basis of deeds which we have done in righteousness, but according to His mercy, by the washing of regeneration and renewing by the Holy Spirit, whom He poured out upon us richly through Jesus Christ our Savior…”
The Hebrew brethren were baptized: Hebrews 6:1-2 – “…leaving the elementary teaching about the Christ, let us press on to maturity, not laying again a foundation of repentance from dead works and of faith toward God, of instruction about baptisms…” & 10:22 – “… let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.”
These passages show us that the saints in all these churches accepted their need to be baptized as a profound necessity of the gospel of Jesus Christ. Should you & I not do the same?