In this last teaching discourse to the apostles the Lord impresses upon them things they have not yet grasped, especially about the Holy Spirit: that He is a divine Person, giving spiritual illumination and assurance, and impressing Christ on the hearts of believers.
Love for Christ is constantly eroded by other concerns, and by salvation and blessing being taken for granted. Here scriptures show how admiration is maintained together with indebtedness, Christ-likeness and trust in Him. These deepen love. Here also is discerning love – the vital kind.