“be filled with the Spirit” (Ephesians 5:18) is to be controlled by the Holy Spirit. This is a present continuous action and requires a believer to be (a) daily yielded to God, (b) daily in repentance with confession with godly sorrow, (c) daily allowing the word of God to richly indwell the inner man. Being controlled by the Holy Spirit empowers a believer (a) daily in spiritual battle (Spirit versus flesh) and, (b) daily in living out the person and character and conduct of Christ and in being obedient to the will of God.
If You Only Knew
Paul closes Ephesians chapter 3 with some of the most powerful words ever written. He prays that we will all come to know two critical things: 1) How much God loves us, and 2) How much God wants to do through us. If we only knew those two things and lived like they were true, what a difference it would make in our lives!