John 21:25; John 20:30-31

25 And there are also many other things which Jesus did, which if they were written in detail, I suppose that even the world itself would not contain the books that would be written.

30 Therefore many other signs Jesus also performed in the presence of the disciples, which are not written in this book;

31 but these have been written so that you may believe that Jesus is the Christ, the Son of God; and that believing you may have life in His name.