"To the church of God which is at Corinth, to those who have been sanctified in Christ Jesus, saints by calling, with all who in every place call on the name of our Lord Jesus Christ, their Lord and ours" (I Corinthians 1:2).
Yes, Paul's statement indicates that all Christians became Christians in the same manner. "Calling on the name of the Lord" means to appeal to a command issued by the Lord. See Calling on the Name of the Lord.
Other passages that indicate that all Christians were saved in a similar way are:
- Peter's statement that Gentiles were saved liked the Jews. "But we believe that we are saved through the grace of the Lord Jesus, in the same way as they also are" (Acts 15:11).
- Paul's statements concerning baptism state that all Christians were baptized.
- "Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death?" (Romans 6:3).
- "For by one Spirit we were all baptized into one body, whether Jews or Greeks, whether slaves or free, and we were all made to drink of one Spirit" (I Corinthians 12:13).
- "For all of you who were baptized into Christ have clothed yourselves with Christ" (Galatians 3:27).