“One mark of truly orthodox theologians is that their writings always include expressions of doxology. Knowledge of the Lord’s character and His work should inspire heartfelt praise, for why learn about God if we are not moved to fulfill the purpose for which we are created — to worship and glorify the Creator (Isa. 43:7)? When studying theology does not prompt us to adoration, we must question whether we are more concerned to puff ourselves up with knowledge than to glorify God.
As sound theologians, the apostles could not help but include doxologies as they the divine mysteries revealed to them. Paul, for example, bursts into doxology — a word of glory to God — at several points in his epistles, including today’s passage. Having contemplated the great work of God, and prayed for us to be rooted in Christ’s love (Eph. 1:1–3:19), the apostle ends his prayer with praise to God (3:20–21). Like all words of glory, this doxology does not increase the “amount” of inherent glory our triune Creator possesses; rather, it acknowledges His worthiness and extols Him for what He has done, announcing His glories to creation (Pss. 29:2; 96:8; Isa. 42:12).”