“They spend” | יְבַלּ֣וּ | To fail; by implication to wear out, decay (causatively, consume, spend) | spend |
“their days” | יְמֵיהֶ֑ם | A day (as the warm hours), whether literal (from sunrise to sunset, or from one sunset to the next), or figurative (a space of time defined by an associated term), (often used adverb) | days |
“in wealth,” | בַטּ֣וֹב | Good (as an adjective) in the widest sense; used likewise as a noun, both in the masculine and the feminine, the singular and the plural (good, a good or good thing, a good man or woman; the good, goods or good things, good men or women), also as an adverb (well) | wealth |
“and in a moment” | וּ֝בְרֶ֗גַע | A wink (of the eyes), i.e., a very short space of time | moment |
“go down” | יֵחָֽתּוּ׃ | To sink, i.e., descend; causatively, to press or lead down | go down |
“to the grave.” | שְׁא֣וֹל | Hades or the world of the dead (as if a subterranean retreat), including its accessories and inmates | grave |