Strong's G2186 — ἐφίστημι (verb)
ephistemi (ef-is'-tay-mee) v.
1. to stand upon, i.e. be present (in various applications, friendly or otherwise, usually literal)
[from G1909 and G2476]
KJV: assault, come (in, to, unto, upon), be at hand (instant), present, stand (before, by, over) 
Root(s): G1909, G2476 
Hebrew root: ἵστημι
Occurrences: 21