Just five short words, “Be filled with the Spirit,” but they are filled with power. That verb is an imperative. In other words, it is not just a suggestion or a request or a good idea that as a believer we should always be filled with the Holy Spirit. This is a command. If you are not filled with the Holy Spirit, you are not just missing out, but you are messing up! It is not a mistake; it is a sin. In fact, you are outside the will of God.
It may sound contradictory, but we really do believe in a God who is unbelievable and in this magnificent book, Paul tells us that what God has done for his people is unbelievable and what God wants to do through his people is unbelievable. God has taken the lowliest of the low and raised them to the highest of the heights. Just as in the beginning, God created something out of nothing. God in his magnificent grace claimed that which was lost, raised that which was dead, redeemed that which was enslaved, restore that which was broken and reconciled that which was separated.