Let Us Love One Another
In this passage John explains what love is, the source of it and how to express it. In the previous verse, (John 4:6), He urges the church to “test the spirits.” Now He gives an infallible test of true Christianity: genuine love. He has just made it clear that it is loving to test the spirits, being intolerant toward those who depart from scripture, not genuinely confessing Jesus Christ as having come in the flesh. Now John turns to love in the church itself. This is the third time John has returned to this subject.