μήποτεmḗpote

1. As neg. particle, never: Hebrews 9:17.

2. As conjc., lest ever, lest haply (the idea of chance rather than of time seems to prevail in NT): Matthew 4:6(LXX) Matthew 5:25, Matthew 7:6, Matthew 13:15(LXX), Matthew 13:29, Matthew 15:32, Matthew 27:64, Mark 4:12(LXX) Mark 14:2, Luke 4:11, Luke 12:58, Luke 14:12, Luke 14:29, Acts 28:27; after verbs of fearing or taking heed, Luke 21:34, Hebrews 2:1, Hebrews 3:12, Hebrews 4:1; with ellipse of the verb or participle, Luke 14:8, Acts 5:39; in later writers, perhaps, Matthew 25:9.

3. As interrogative

(a) in direct questions, like μή, expecting a negative answer: John 7:26, Hebrews 9:17

(b) in indirect questions, whether haply, if haply: Luke 3:15, 2 Timothy 2:25.