וְע֗וֹד בִּרְצוֹתִי֙ בְּבֵ֣ית אֱלֹהַ֔י יֶשׁ־לִ֥י סְגֻלָּ֖ה זָהָ֣ב וָכָ֑סֶף נָתַ֤תִּי לְבֵית־אֱלֹהַי֙ לְמַ֔עְלָה מִכָּל־הֲכִינ֖וֹתִי לְבֵ֥ית הַקֹּֽדֶשׁ׃
Rashi on I Chronicles
And moreover, since I desired the House of my God The meaning is: because of my great desire, that I desired the House of my God.
Rashi on I Chronicles
I have a treasure I amassed for myself an accumulation of gold and silver, as he explains further.