Some have mistakenly thought that Jesus' Last Discourse (Upper Room Discourse, John 13-17) does not fit the evangelistic purpose of the Gospel of John (John 20:30-31). Instead of viewing John 13-17 as evangelistic, they conclude that Jesus' Last Discourse was written to believers to instruct them on how to live the Chistian life.

At the 2008 Grace Evangelical Society National Conference, Zane Hodges demonstrates that Jesus' Last Discourse (Upper Room Discourse) was written for the express purpose of leading people to believe in Jesus for everlasting life. In part 1 of this 2 part series of messages, Zane covers (1) a Fundamental Premise, (2) the Historical Purpose of the Last Discourse, (3) the Audience of John's Gospel, and (4) the Literary Character and Purpose of the Last Discourse.

"Introducing John's Gospel: In the Upper Room with Jesus the Christ" (Part 1 of 2) by Zane C. Hodges https://faithalone.org/wp-content/uploads/2020/09/Hodges.pdf