verb — [eng-ka-keh-oh]
definition: to lose one’s motivation in continuing a desirable pattern of conduct or activity, lose enthusiasm; lose heart; be discouraged (of pursuing some goal); tire of, grow weary; give up. Stated positively, it means keep on; continue.
Διὰ τοῦτο, ἔχοντες τὴν διακονίαν ταύτην καθὼς ἠλεήθημεν, οὐκ ἐγκακοῦμεν… (2 Corinthians 4:1)
Most modern translations translate the above verse, “we do not lose heart.” Other exceptions are: “we faint not” (KJV, ASV, DRBY), as well as “we never give up” (NLT), and “we’re not about to throw up our hands and walk off the job” (The Message).
Very much a key word in 2 Corinthians 4, bookending the chapter in verse 1 and verse 16.
Other NT passages: Luke 18:1; Galatians 6:9; Ephesians 3:13; 2 Thessalonians 2:13.