Ephesians 5:10

Greek	δοκιμάζοντες τί ἐστινplugin-autotooltip__default plugin-autotooltip_bigεἰμί greek εἰμί is the first person singular verb for “to be” (εἶναι [the infinitive form] = “to be”). It an irregular verb, and, like English, changes significantly between person and tense. For example εἰμί is the word for am and ἦν is the word for was, e.g. εὐάρεστον τῷplugin-autotooltip__default plugin-autotooltip_bigὁ, ἡ, τό greek Meaning: * The The definite article. Forms Singular Case Masculine Feminine Neuter Nominative ὁ ἡ τό Genitive τοῦ τῆς τοῦ Dative τῷ τῇ κυρίῳ,
ESV	and try to discern what is pleasing to the Lord.
NIV	and find out what pleases the Lord.
NLT	Carefully determine what pleases the Lord.
KJV	Proving what is acceptable unto the Lord.