Strong's G1520 — εἷς (noun)
heis (heis`) (including the neuter (etc.) hen) n.
1. one
[a primary numeral]
KJV: a(-n, -ny, certain), + abundantly, man, one (another), only, other, some 
See also: G1527, G3367, G3391, G3762 
Occurrences: 266