They Must Keep His Commandments And He Will Respond By Giving Them The Spirit Of Truth For Their Help And Strengthening (John 14:15-21).
Central to what the disciples are to receive is their obedience. This is stressed here in the opening and closing verses of the passage. And we should note that it is an obedience based on love. Jesus had full confidence in their love for Him. Furthermore He stresses that that love is revealed not by gushing epitaphs, but by obedience to His requirements. In return (although not as something that has been earned but as a free gift) He will give to them the Spirit of Truth to be with them for ever as their Helper.
His point is clear for us also. Our love for Him will be revealed in the fact that we seek to do what pleases Him. If we truly love Him we will do what He says. The corollary is that if we do not seek to do in our lives what pleases Him it is evidence that we do not truly love Him. Profession is one thing, reality is another. Of course, we may sometimes fail, but if we love Him our intent will be constant. And in return, not as something to be earned but as a gift, He will impart to us the Spirit of Truth, the One Who will be with us and will be in us as our Helper and guide.