God gave two great gifts to the world. He gave His Son, Jesus Christ, to be our Savior, and He gave the Holy Spirit to be our abiding presence. Consider Jesus’ words about the Holy Spirit: “You know Him, for He lives with you and will be in you” (John 14:17).
Identify His person: “You know Him.” The disciples already knew about the Holy Spirit because Jesus had told them about Him. We know about the Spirit because Christ revealed the Holy Spirit to us.
Acknowledge His partnership: “He lives with you.” He is not a distant, obscure proposition. He is a present, familiar association. If we do not perceive him in continual partnership with us it is not because of His absence but because of our apathy. We sometimes think that if we have no manifestation of the Spirit, He is absent. The Spirit was not noticeably present with Jesus in those dark days of His temptation in the wilderness. But He was there. Whether you can feel or show any evidences of the Spirit or not, the important thing is to hold on to this truth: “He lives with you.”
Accept His presence: “He will be in you.” The Holy Spirit who is with us can be in us. The disciples realized this promise at Pentecost. The mention of that occasion causes some Christians to hesitate. Remember that the Holy Spirit is the Spirit of Jesus. There was nothing off-center about Jesus. Remember the list of the fruit of the Spirit (Galatians 5:22-23). There is nothing queer or peculiar here. The fruit of the Spirit is for all; the gifts of the Spirit are for particular persons for special purposes (1 Corinthians 12:11). Claim this promise: “He will be in you.”
The Holy Spirit is not a doctrine. He is a person. It is not our task to comprehend Him; it is our privilege to know Him in personal experience. He is better understood in action than in definition. Know Jesus and you know His Spirit. You have Him; let Him have you.
Bramwell Tripp, Big Themes in Small Portions