For we are {i} strangers before thee, and sojourners, as were all our fathers: our days on the earth are as a shadow, and there is none abiding.

(i) Therefore we have this land loaned to us for a time.

Wesley's Notes

29:15 Strangers - For the land which we possess is thine, not ours; we are not the proprietors but only thy tenants: and as our fathers once were mere strangers in it, even before men, so we at this day are no better before thee, having no absolute right in it, but only to travel through it, and sojourn in it for the short time that we live in the world. None abiding - We only give thee what we must shortly leave, and what we cannot keep to ourselves: and therefore it is a great favour that thou wilt accept such offerings. David's days had as much of substance in them as most men: for he was upon the whole a good man, an useful man, and now an old man. And yet he puts himself in the front of those who must acknowledge, that their days on the earth are as a shadow: which speaks of our life as a vain life, a dark life, a transient life, and a life that will have its period, either in perfect light or perfect darkness.

King James Translators' Notes

abiding: Heb. expectation

Matthew Henry's Concise Commentary

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.