Revelation of Jesus Christ
From the KJV 1611 with Strong's Concordance
G4012
περί
peri
{per-ee'}
From the base of G4008; properly through (all over), that is, around; figuratively with respect to; used in various applications, of place, cause or time (with the genitive case denoting the subject or occasion or superlative point; with the accusative case the locality, circuit, matter, circumstance or general period).
NOTE: Used widely throughout the New Testament (below are the usages from Revelation only).
with
Revelation 15:6.