15 For we are strangers before thee, and sojourners, as were all our fathers: our days on the earth are as a shadow, and there is none abiding. 
15 We are foreigners and strangers in your sight, as were all our ancestors. Our days on earth are like a shadow, without hope.
15 For we are strangers before you and sojourners, as all our fathers were. Our days on the earth are like a shadow, and there is no abiding.
15 As far as you're concerned, we're homeless, shiftless wanderers like our ancestors, our lives mere shadows, hardly anything to us.
15 For we are aliens and pilgrims before You, As were all our fathers; Our days on earth are as a shadow, And without hope.
15 We are here for only a moment, visitors and strangers in the land as our ancestors were before us. Our days on earth are like a passing shadow, gone so soon without a trace.
Matthew Henry's Commentary on 1 Chronicles 29:15
Commentary on 1 Chronicles 29:10-19
(Read 1 Chronicles 29:10-19)
We cannot form a right idea of the magnificence of the temple, and the buildings around it, about which such quantities of gold and silver were employed. But the unsearchable riches of Christ exceed the splendour of the temple, infinitely more than that surpassed the meanest cottage on earth. Instead of boasting of these large oblations, David gave solemn thanks to the Lord. All they gave for the Lord's temple was his own; if they attempted to keep it, death would soon have removed them from it. They only use they could make of it to their real advantage, was, to consecrate it to the service of Him who gave it.