Strong's G756 — ἄρχομαι (verb)
archomai (ar'-khom-ai) v.
1. to commence (in order of time)
[middle voice of G757 (through the implication, of precedence)]
KJV: (rehearse from the) begin(-ning) 
Root(s): G757 
Hebrew root: ἄρχω
Occurrences: 84