Second of two studies about Paul’s experience in Philippi
“So they said, ‘Believe on the Lord Jesus Christ, and you will be saved, you and your household.’
“Then they spoke the word of the Lord to him and to all who were in his house
“And he took them the same hour of the night and washed their stripes. And immediately he and all his family were baptized” (Acts 16:31-33).
Hearing the Philippian jailer’s inquiry about salvation, Paul and Silas teach him and all “in his house” what they need to know about obeying the gospel. As a result of this teaching, all who are capable of believing are immediately baptized.
One cannot conclude that a simple verbal acknowledgement of the Lord was all that was necessary for them to be saved because they were taught “the word of the Lord” before being baptized. And we know the preachers taught baptism because as a result of the teaching, the jailer and his household were baptized. Baptism is not otherwise mentioned in this passage.
Furthermore, we know this situation involved a comprehensive faith because verse 34 says the jailer rejoiced, “having believed in God.” This belief had to have been an active process, not just an isolated, one-time verbal confession because his believing included being buried in baptism.
This passage is powerful and convincing as well as being parallel to other accounts of obeying the gospel. All such accounts conclude with the baptism of the believer.