Thus, the beginning of our text, “Blessed be God…” runs through the entirety of the passage, and is the underpinning for all the reasons to give Him such praise. Without this theme being noticed, the meaning of the pericope loses coherence, for what God works to our benefit is always to show that which He is, that being not merely the source of all that is good and holy in the unique manner that belongs only to God, but to express His inexpressible, self-contained, infinite, eternal and unchanging essence in a manner that elicits wonder, and the expression of that wonder resulting in paeans of thankful praise from those creatures He deigned to create to show that which is true of Him alone.
This is the expression of the first point: “Blessed be God.” This is not a suggestion of happiness based on interaction with anything, but an expression of that state in which God alone exists. While we are told, by our Lord, that we shall be blessed for various reasons (cf. Matthew 5:3-11), God, in Himself, is always blessed, which is to say in a state of perfection that has no need for any interaction with any but Himself. (This goes into theology proper [the Doctrine of God]; however, we will not belabor the point here.) We must note that God did not need to create, but in our passage, that which is true of Him is observed and stated, for the purpose of bringing about that praise of Him which is due His inestimable, glorious holiness, and that by His creatures – not because He needs such to prove that which He is, but because it pleased Him, in His perfection, to decree such to come about.
The expression of the second point is clearly perceived in the words set forth in Holy Writ as well: “who has blessed us in Christ with every spiritual blessing in the heavenly places.”
As has been stated, this is not of a need for our Great God to do such, but of His good pleasure. He has blessed us in Christ with every spiritual blessing in the heavenly places (in the realms of the heavenlies) by His beneficent fiat, not due to our being owed such blessing.
If we are to ask, what blessings has God given to us, regarding that which pertains to such that we might be assured of His divine pleasure in both this life, and the life that is to come, it is simply answered: “every spiritual blessing in the heavenly places.” What greater blessing is there in this life that we can be assured of, or what better proof of that greater blessing which is to be given us in the age to come, than to surely know that we have these blessings now, at this time, here, for our benefit, to the praise of the glory of His grace in Christ Jesus?
This, alone, is cause to worship, and by worship, I do not intend merely acknowledgement of the greatness of our God, but of that which He has deigned to do. The worship intended here is that of thanksgiving for His glorious condescension to those creatures, such as you and I, whom He had no need to create in the first place!
If you think yourself worthy of such interaction and communication with our God, think again! He had no need of you, and He gains no glory through you, yet He has willed to receive that acknowledgement of who He is; you add nothing to His glory, yet He has willed to receive such paltry thanks and worship of Himself by that which He has done in His Son, and furthermore, He has revealed that unto you!
Do you give Him such thankful, worshipful praise? Do you render Him the praise that is due Him because of what He did for you in Christ, apart from any perceived merit on your part? The particular merit belongs to Jesus Christ alone, whom God set forth as a propitiation for the sins of His people – this is both the fountain of and the reason for both our works and praise (see 1 John 2:2; 4:10 with Romans 3:21-31; Ephesians 2:10; Luke 7:7-10; etc.).
The remaining texts in our pericope simply add to the reasons for our doxological expression of thanksgiving towards our great and glorious God.
We will be given to worship Him in this continuing doxology as we consider the remainder of the particular portion of this Scritpure.
 See London Baptist Confession of Faith 1689 (hereafter LCF) Chapter 2.2; Also, God Without Passions: A Reader, edited by Samuel Renihan, 2015 – Reformed Baptist Academic Press (RBAP – http://www.rbap.net)