1–3 The synonyms for “praise” (“I will exalt you … I will praise you … I will praise you … and extol your name,” vv. 1–2) set the mood for the psalm. The object of the praise is “my God the King” (v. 1; cf. 5:2; 68:24; 84:3) whose “name” (vv. 1–2) signifies covenantal fidelity. As the Lord is perpetually loyal to his covenantal people, the poet calls on the covenantal community to praise God unceasingly (“for ever and ever … every day … for ever and ever,” vv. 1–2; cf. 115:18). In Jewish practice this psalm was recited twice in the morning and once in the evening service. The Talmud commends all who repeat it three times a day as having a share in the world to come (b. Ber. 4b).
The reason for praise lies in God’s greatness (v. 3; cf. 48:1; 96:4; 147:5). He is the “great” King who deserves the “praise” of humankind. After all, no one can fully understand his purposes or his ways. In the presence of the divine King, human beings must admit their limitations (cf. Job 5:9; 9:10; Isa 40:28).
145:1–3 The theme of the Psalm is the greatness of the Lord. The psalmist is consumed with a holy determination to extol, bless and praise his God and King both in time (every day) and in eternity (forever and ever). The gist of his endless song will be that God is great, that His greatness is worthy of great praise, and that His greatness is infinite in its dimensions.
145:1–3 O God, I Will Ever Bless Your Name. The psalm opens by stating its theme of joy and celebration. Each member of the congregation pledges himself to this (I will).
 VanGemeren, W. A. (2008). Psalms. In T. Longman III & D. E. Garland (Eds.), The Expositor’s Bible Commentary: Psalms (Revised Edition) (Vol. 5, p. 988). Grand Rapids, MI: Zondervan.
 MacDonald, W. (1995). Believer’s Bible Commentary: Old and New Testaments. (A. Farstad, Ed.) (p. 777). Nashville: Thomas Nelson.
 Crossway Bibles. (2008). The ESV Study Bible (p. 1122). Wheaton, IL: Crossway Bibles.