Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ… – Ephesians 1:3

Paul does not say, “Who has, we hope and trust, blessed us,” but he writes, “Who hath blessed us.” Ah, beloved, if you have a full assurance that God has blessed you in Christ, and that now His smile rests upon you, and all the benisons of the covenant are stored there for you, I think that you cannot help saying, “Blessed, blessed be the name of the Most High!” If you have suspicions about the truth of this precious Book, if you have questions about the truth of the doctrines of grace, if you have doubts about your own interest in those things. I do not wonder that you do not praise God, for a blessing which is only mine by peradventure, well, peradventure I shall be grateful for it; but peradventure I shall not. But if I know whom I have believed; if I have a firm grip of spiritual mercies; if all heavenly things are mine in Christ my Lord, I can sing, “Wake up, my glory; awake psaltery and harp; I myself will awake right early.” “Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings.”

With this full assurance should come intense delight: “Who hath blessed us.” God has blessed us. Come, brethren, He has not done some trifle for us, which we can afford to ignore. He has not merely given us some absolutely necessary boons, which we must have, for we could not live without them; but He has in grace dealt still more abundantly with us. He has gone beyond workhouse fare and made us a feast with saints and princes. He has given us more than home-spun garments; He has put upon us robes of beauty and of glory, even His own spotless righteousness. He has blessed us; we are blessed; we feel that we are.

We are not sitting here, and groaning, and crying, and fretting, and worrying, and questioning our own salvation. He has blessed us; and therefore, we will bless Him. If you think little of what God has done for you, you will do very little for Him; but if you have a great notion of His great mercy to you, you will be greatly grateful to your gracious God. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2266.cfm