A good word from John Piper:
So do we build magnificent buildings? Maybe. But not many. The priority put on opulence in the Old Testament palace and temple was owing to an era of “come-see-religion.” Like the Queen of Sheba who came to Israel and was breathless at Solomon’s wealth (1 Kings 10:5). But the New Testament has none of that emphasis on opulence, because it is a “go-tell-religion.” The mission impulse dominates the domestic impulse. We are sojourners. We are sent. “Take nothing for your journey, no staff, nor bag, nor bread, nor money; and do not have two tunics” (Luke 9:3). This saying is not normative for all mission, but it does flavor everything.
So the quest for excellence is always seasoned by a mission-oriented mentality with a bent toward simplicity. It’s a bent, not an absolute. There may be a place for a cathedral here and there. But the people of God won’t lean toward living in palaces. And the vast work of the kingdom will happen mainly in the rugged outposts.
Source: Brothers, Supernatural Does Not Mean Stupid