1 John 4:14

God’s presence is observable in the midst of Christians who love each other. God produces that love. Most of John’s readers had not, and all of us have not, seen Jesus Christ in the flesh as the apostles did. However, we can see God too and can bear witness with the apostles that God sent Jesus Christ into the world. We can share the apostles’ experience that John said was his goal in writing this epistle (1 John 1:3-4). We can see God both in the manifestation of His love and in God’s life behind that love as we observe Christians loving one another. This verse then is a high point in John’s argument.

This is the only place in John’s epistles where he used the term "savior." It also appears only once in his Gospel (John 4:42).

The Church has no more effective way to testify to the world about the Saviorhood of Jesus than by the re-display of the Savior’s love in the fellowship of His disciples." [Note: Hodges, The Epistles . . ., p. 192.]