Passage
O Lord God of Abraham, and of Isaac, and of Israel our fathers, keep for ever this will of their heart, and let this mind remain always for the worship of thee.
1 Chronicles 29:18 (DRB)
Nearby Context
1 Chronicles 29:16 O Lord our God, all this store that we have prepared to build thee a house for thy holy name, is from thy hand, and all things are thine.
1 Chronicles 29:17 I know my God that thou provest hearts, and lovest simplicity, wherefore I also in the simplicity of my heart, have joyfully offered all these things: and I have seen with great joy thy people, which are here present, offer thee their offerings.
1 Chronicles 29:18 O Lord God of Abraham, and of Isaac, and of Israel our fathers, keep for ever this will of their heart, and let this mind remain always for the worship of thee.
1 Chronicles 29:19 And give to Solomon my son a perfect heart, that he may keep thy commandments, thy testimonies, and thy ceremonies, and do all things: and build the house, for which I have provided the charges.
1 Chronicles 29:20 And David commanded all the assembly: Bless ye the Lord our God. And all the assembly blessed the Lord the God of their fathers: and they bowed themselves and worshipped God, and then the king.
Study Lenses
The verse centers on "lord", "abraham", "isaac", "israel", "fathers", "keep", "ever", and "heart". It is saying that the verse draws attention to "lord" and "abraham", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 17's "I know my God that thou provest..." into verse 19's "And give to Solomon my son a...", so "lord" and "abraham" belong inside that flow. In 1 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "lord" and "abraham" with trust shaped by these words, not by a vague optimism outside the passage.