The Greek word “arnion”

Found only in Jn. 21:15 and Rev. 5:6, 8, 12-13; 6:1, 16; 7:9-10, 14, 17; 12:11; 13:8, 11, the Greek noun “arnion” meant “little lamb.”

Jesus told Peter to “feed His lambs” (Jn. 21:15).  In the book of Revelation, with the exception of Rev. 13:11 where a “counterfeit lamb” (the “second beast”) is discussed, John always applied arnion to Jesus.  This word is used to remind readers Jesus was “slain” (Rev. 5:6), was and is worthy of worship (Rev. 5:8, 12), capable of “wrath” (Rev. 6:16), One who now sits on a throne (Rev. 7:10), the One whose death purifies His people from sin (Rev. 7:14), a shepherd who provides for people (Rev. 7:17), and the One through whom salvation is possible (Rev. 12:11).  The “book of life” is also associated with Jesus the “lamb” (Rev. 13:8).