Who is "getting things done"?

In my post yesterday about Psalm 127, I offered a few reflections on the relationship between Psalm 127: 1-2 and productivity.  Today I want to add a related point about the strange and wonderful revelation in these verses of God's sovereignty and our co-workmanship.

Similar to the verses I posted about after hearing a Piper sermon, and so many others (like Phil 2:12-13), verses 1 and 2 of Psalm 127 has that strange and wonderful property where the subject or actor of the sentence fluidly shifts between God and man: "Unless the Lord builds...those who build..."   Who is doing the building here?  The Lord or those who build?  The answer, inexplicably, marvelously is YES!

How could the Maker and Sustainer of the universe being doing the puny little things I'm doing?  Building houses, writing emails, teaching classes..he's doing all of it!  What power...and what an unbelievable foundation to stand upon upon as I go about trying to manage what seems like an impossible number of tasks.  Keep me on that Rock, oh God!