[In Ephesians 5] Paul was not suggesting that we can possess the Spirit in varying measures. The Holy Spirit is an indivisible person – one of the divine persons of the Trinity, which means that He Himself is God – and He either indwells a person or not. No one has the Spirit of God in partial measure. But to be “filled with the Spirit” is to be controlled by the Spirit. The contrast Paul made proves the point. To be drunk with wine is to have your faculties controlled by alcohol – to be so given over to its influence that the wine governs you in a negative way. To be filled with the Spirit is simply to be controlled by Him so that His power dominates you in a positive way.