ANSWER: They were converted by obeying Him, i.e., by “following Him” according to His will! (Matthew 4:22; Mark 1:18; Luke 5:11, 28). Today, we must do the same. There is no other way! The question is sometimes asked, “were the men who became apostles of necessity immersed in water for the remission of their sins?” The answer is yes! In Romans 6:3-4, the apostle Paul said, “Know ye not that so many of ‘us’ as were baptized . . . Therefore, ‘we’ are buried with Him by baptism . . .” Also in Titus 3:5, “He saved ‘us’ by the washing of regeneration, . . .” Peter said in I Peter 3:21, “Baptism doth also now save ‘us’.” Certainly the personal pronouns “us” and “we” include the apostles themselves. Baptism was as necessary to their obedience as is ours today!