Instant, be Instant, Instantly - Vine's Expository Dictionary of New Testament Words
Instant, be Instant, Instantly[ A-1,Verb,G1945, epikeimai ]
to lie" or "press upon," is rendered "they were instant" in Luke 23:23 (Amer. RV, "they were urgent"). See IMPOSE.
[ A-2,Verb,G2186, ephistemi ]
"to set upon or by," is used in the NT intransitively, either in the Middle Voice, or in certain tenses of the Active, signifying "to stand by, be present, be at hand, come on or upon," and is translated "be instant" in 2 Timothy 4:2. See ASSAULT, COME, etc.
Note: For proskartereo, in Romans 12:12, AV, rendered "continuing instant," RV, "steadfastly," See CONTINUE, No. 9.
[ B-1,Noun,G4709, spoudaios ]
"earnestly, diligently," is rendered "instantly" in Luke 7:4, AV (RV, "earnestly"). See EARNEST.
Note: For the phrase en ekteneia, rendered "instantly" in Acts 26:7, AV, See EARNEST, D.