I knowe also, my God, that thou tryest the heart, and hast pleasure in righteousnesse: I haue offred willingly in the vprightnesse of mine heart all these things: now also haue I seene thy people which are found here, to offer vnto thee willingly with ioy.
1 Chronicles 29:15 For we are stragers before thee, and soiourners, like all our fathers: our dayes are like ye shadowe vpon the earth, and there is none abiding.
1 Chronicles 29:16 O Lord our God, all this abundance that we haue prepared to buylde thee an house for thine holy Name, is of thine hand and all is thine.
1 Chronicles 29:17 I knowe also, my God, that thou tryest the heart, and hast pleasure in righteousnesse: I haue offred willingly in the vprightnesse of mine heart all these things: now also haue I seene thy people which are found here, to offer vnto thee willingly with ioy.
1 Chronicles 29:18 O Lord God of Abraham, Izhak and Israel our fathers, keepe this for euer in the purpose, and the thoughts of the heart of thy people, and prepare their hearts vnto thee.
1 Chronicles 29:19 And giue vnto Salomon my sonne a perfit heart to keepe thy commandements, thy testimonies, and thy statutes, and to doe all things, and to builde the house which I haue prepared.
The verse centers on "knowe", "thou", "tryest", "heart", "hast", "pleasure", "righteousnesse", and "haue". It is saying that the verse draws attention to "knowe" and "thou", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 16's "O Lord our God all this abundance..." into verse 18's "O Lord God of Abraham Izhak and...", so "knowe" and "thou" 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 "knowe" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.