Proverbs 31:18 New English Translation

¹⁸She perceived^[a] that her merchandise was good.
Her lamp^[b] would^[c] not go out in the night.

Proverbs 31:18 tn The first word of the ninth line begins with ט (tet), the ninth letter of the Hebrew alphabet.tn As the perfect form of a dynamic verb, טָעֲמָה (taʿamah) should be understood as past tense or perfective. The basic meaning of the word is to “taste.” By extension it means to “perceive; discern; evaluate” (cf. Job 12:11; 34:3). It either refers to evaluating the quality of her merchandise (that she sells) or to being sure that she is making a good and profitable trade.
Proverbs 31:18 sn The line may be taken literally to mean that she is industrious throughout the night (“burning the midnight oil”) when she must in order to follow through a business deal (W. McKane, Proverbs [OTL], 668); cf. TEV. But the line could also be taken figuratively, comparing “her light” to the prosperity of her household—her whole life—which continues night and day.
Proverbs 31:18 tn The imperfect verb יִכְבֶּה (yikbeh) is used in its past habitual sense. The verbs describing the woman from verses 12-29 include 19 perfects and 9 preterites which describe actions with past time references. Thus the four imperfect verbs that describe her (vv. 14, 18, 21, 27) should be understood as modal and operating in a past time frame. Technically this verb does not describe her directly, though it refers to her lamp.

New English Translation (NET)