There is an old saying in fundamental circles for a long time, that you cannot have more of the Holy Spirit if you already have the Holy Spirit. That sounds good on the surface, but it is not so. Even though as a believer, we are permanently indwelt by the person of the Holy Spirit, we can still have more of the Holy Spirit—more of His anointing, more of His power, His gifts, graces, fullness, and empowering. No Christian has all of the infinite Spirit because God gives the Spirit in measure to the saints. But to Jesus, God gave the Spirit without measure or limits. Only Christ had all the Spirit without measure.
But for the child of God, there are varyings and intensities of anointings. And some things we simply cannot explain in our own terms. We start trying to comprehend the incomprehensible God with our own minds, and it is like a bench trying to understand the carpenter that made it. It is impossible.
As a believer, you can have more of the Spirit, for what else could Luke 11:13 mean—‘If you, being evil, know how to give good gifts to your children, how much more will your Father give the Holy Spirit to them that ask Him’? This is Paul’s prayer, that we might be strengthened with might by the Spirit in the human spirit, the inner man, to the point that Christ dwells in such a deeper and relational measure, that we increasingly know and experience the love of Christ which passes knowledge; it transcends the mind, that you might be filled with all the fullness of God.
“More, more, about Jesus; more, more, about Jesus; more of His saving fulness see, more of His love, who died for me.”
– Mack Tomlinson