John 20:31

“But these are written, etc.]. The several ends of recording what is written in this book, in proof of Christ’s resurrection, are as follow: one is, that ye might believe that Jesus is the Christ, the Son of God; that Jesus, who was diminutively called Jesus, the son of Mary, the son of Joseph, the carpenter’s son, Jesus of Nazareth, and of Galilee, was the Christ, or true Messiah; which signifies anointed, and takes in all his offices of prophet, priest, and King, to which he was anointed; and is an article of faith of the greatest importance; and is to be believed through the signs proving his resurrection, who, according to the Scriptures, was to rise again; and which, by the signs here…”

“But these are written--as sufficient specimens. the Christ, the Son of God--the one His official, the other His personal, title. believing . . . may have life--(See on Joh 6:51-54). Next: John Chapter 21”

“These are written - Those recorded in this gospel. That ye might believe ... - This is a clue to the design which John had in view in writing this gospel. The whole scope or end of the book is to accomplish two objects: To prove that Jesus was the Messiah; and, That they who looked at the proof might be convinced and have eternal life. This design is kept in view throughout the book. The miracles, facts, arguments, instructions, and conversations of our Lord all tend to this. This point had not been kept in view so directly by either of the other evangelists, and it was reserved for the last of the apostles to collect those arguments, and make out a connected demonstration that Jesus was the…”

“But these things are written that ye may believe - That ye may be confirmed in believing. Faith cometh sometimes by reading; though ordinarily by hearing. Next: John Chapter 21”

“20:31 that you may continue to believe: The present tense (found in some manuscripts) indicates that John wrote to encourage believers. Other manuscripts read that you may [come to] believe, suggesting that John wrote to stimulate new faith (cp. 1:7).”

“these: Joh 20:28, Joh 1:49, Joh 6:69, Joh 6:70, Joh 9:35-38; Psa 2:7, Psa 2:12; Mat 16:16, Mat 27:54; Luk 1:4; Act 8:37, Act 9:20; Rom 1:3, Rom 1:4; Jo1 4:15, Jo1 5:1, Jo1 5:10, Jo1 5:20; Jo2 1:9; Rev 2:18 believing: Joh 3:15, Joh 3:16, Joh 3:18, Joh 3:36, Joh 5:24, Joh 5:39, Joh 5:40, Joh 6:40, Joh 10:10; Mar 16:16; Pe1 1:9; Jo1 2:23-25, Jo1 5:10-13 through: Luk 24:47; Act 3:16, Act 10:43, Act 13:38, Act 13:39 Next: John Chapter 21”