Jude 1:24–25 (ESV)

24 Now to him who is able to keep you from stumbling and to present you blameless before the presence of his glory with great joy,

How do you bless the Lord? Well, the term to bless really means to eulogize, that is, to speak well of someone. If we bless the Lord, we speak well of our God, and that is exactly what we are to do. It is true that God blesses us, and the amazing thing is that when God blesses us, exactly what God says, comes to pass. We do not have that capability. God does, and so when God speaks well of us and blesses us, exactly what he says about us, comes about and to us. And then we respond by giving praise to God for what he has done, don't we?1

Dennis Prutow