A.T. Robertson Commentary Revelation 2:27

"and he shall rule them with a rod of iron, as the vessels of the potter are broken to shivers; as I also have received of my Father:" — Revelation 2:27 (ASV)

He shall rule (ποιμανε). Future active of ποιμαινω, to shepherd (from ποιμην, shepherd), also from Ps 2:8f. See again Re 7:17; 12:5; 19:15.

With a rod of iron (εν ραβδω σιδηρα). Continuing the quotation. Instrumental use of εν. Ραβδος (feminine) is the royal sceptre and indicates rigorous rule.

The vessels of the potter (τα σκευη τα κεραμικα). Old adjective, belonging to a potter (κεραμευσ, κεραμος), here only in N.T.

Are broken to shivers (συντριβετα). Present passive indicative of συντριβω, old verb, to rub together, to break in pieces .