After Nehemiah had rebuilt the wall of Jerusalem they had a big ceremony led by Ezra. During that time people were praising God and a group of Levites said this to the people, "Stand up and praise the LORD your God, for he lives from everlasting to everlasting!"Then they continued, "Praise his glorious name! It is far greater than we can think or say."
What an amazing line of Scripture: Our God is so much greater than we can even "think". It's humbling to realize that our worship is limited by our capacity to understand God's greatness. Our minds literally cannot fathom all that He is! How many times have we given God less than he deserves because our minds can't comprehend his greatness!
Our God is so great we cannot "say" the right words to captures his greatness! It's not a case of being at a loss for words; the words won't come to us later. The words simply don't exist. That's how great our God is.
Read the Bible in One Year Plan: Nehemiah 8-9