NET
31 But these are recorded so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.
Darby
31 but these are written that ye may believe that Jesus is the Christ, the Son of God, and that believing ye might have life in his name.
KJV
31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.