John 20:30-31

30There are also many other signs (attesting miracles) that Jesus performed in the presence of the disciples, which are not written in this book;

31but these have been written so that you may believe [with a deep, abiding trust] that Jesus is the Christ (the Messiah, the Anointed), the Son of God; and that by believing [and trusting in and relying on Him] you may have life in His name.