Wow that's amazing Paul. Look at the words.
"if"
G1487
εἰ
ei
i
A primary particle of conditionality; if, whether, that, etc.: - forasmuch as, if, that, ([al-]) though, whether. Often used in connection or composition with other particles, especially as in G1489, G1490, G1499, G1508, G1509, G1512, G1513, G1536, and G1537. See also G1437.
"it be possible"
G1415
δυνατός
dunatos
doo-nat-os'
From G1410; powerful or capable (literally or figuratively); neuter possible: - able, could, (that is) mighty (man), possible, power, strong.
"as much as lieth in you"
G1537
ἐκ, ἐξ
ek ex
ek, ex
A primary preposition denoting origin (the point whence motion or action proceeds), from, out (of place, time or cause; literally or figuratively; direct or remote): - after, among, X are, at betwixt (-yond), by (the means of), exceedingly, (+ abundantly above), for (-th), from (among, forth, up), + grudgingly, + heartily, X heavenly, X hereby, + very highly, in, . . . ly, (because, by reason) of, off (from), on, out among (from, of), over, since, X thenceforth, through, X unto, X vehemently, with (-out). Often used in composition, with the same general import; often of completion.
G5216
ὑμῶν
humōn
hoo-mone'
Genitive case of G5210; of (from or concerning) you: - ye, you, your (own, -selves).
"live peaceably"
G1514
εἰρηνεύω
eirēneuō
i-rane-yoo'-o
From G1515; to be (act) peaceful: - be at (have, live in) peace, live peaceably.
[with all men]
Molly's translation:
For as much as you have the power of a mighty man within yourself, live peaceably amidst all men. [or, be at peace with all men.]
It takes power to live peaceably. The peaceful ones are the most powerful.