Strong's #4007: per (pronounced per)
from the base of 4008; an enclitic particle significant of abundance (thoroughness), i.e. emphasis; much, very or ever:--(whom-)soever.
Thayer's Greek Lexicon:
per
1) however much, very much, altogether, indeed
Part of Speech: particle
Relation: from the base of G4008
Usage:
This word is used 3 times:
Hebrews 3:6: "house are we, if we hold fast the confidence"
Hebrews 3:14: "we are made partakers of Christ, if we hold the beginning"
Hebrews 6:3: "And this will we do, if God permit."