Strange grammar: how does man "bless" God? The Psalmist says "Bless the LORD, O my soul, and all that is within me, bless his holy name" (Ps 103:1). Man cannot increase God's existing glory — but He can acknowledge it, declare it, return it. Blessing God is the appropriate speech of the creature toward the Creator: acknowledgment, thanksgiving, praise. "Every good gift and every perfect gift is from above, coming down from the Father of lights" (Jas 1:17) — blessing Him is returning the gift in the form of grateful speech. Blessing Him is the Christian's default verb.
BLESS, v.t.
BLESS, v.t. [Sax. bletsian.] (1.) To make happy; to confer a gift or favor upon. (2.) In Scripture, the verb works in both directions: God blesses man (with every spiritual blessing in Christ); and man blesses God (with the praise of the creature acknowledging the Creator). "Bless the LORD, O my soul" is the Psalmist's way of returning glory to its Source.
Psalm 103:1-2 — "Bless the LORD, O my soul, and all that is within me, bless his holy name! Bless the LORD, O my soul, and forget not all his benefits."
Ephesians 1:3 — "Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places."
James 1:17 — "Every good gift and every perfect gift is from above, coming down from the Father of lights."
Psalm 145:21 — "My mouth will speak the praise of the LORD, and let all flesh bless his holy name forever and ever."
Modern Christians often say "God bless you" but rarely "I bless God." Scripture commands both directions; we have shrunk to one.
Ephesians 1:3 works the verb in both directions: blessed be God, who blessed us. Christian speech should frequently bless God — speak praise, thanksgiving, worship back toward Him. The blessing flows; the grateful blessing returns. "Bless the LORD, O my soul" should appear in your vocabulary as naturally as "good morning." Practice the return-blessing. Speak it out loud when the coffee is good, when the sunrise is beautiful, when the child laughs, when the sermon lands.
H1288 — barak. G2127 — eulogeō.
H1288 — barak (בָּרַךְ) — to bless; root of berakah (blessing).
G2127 — eulogeō (εὐλογέω) — to speak well of; bless.
"Bless the LORD, O my soul. Practice the return-blessing until it becomes involuntary."
"God blessed us; we bless Him back. The grammar works in both directions; use both."