{Is it not written?} (ouk estin gegrammenon;).
Periphrastic perfect passive indicative of graph(935c) (as in
 2:17 ) in place of the usual gegraptai. "Does it not stand
written?" {In your law} (en t(9369) nom(9369) hum(936e)). From  Ps 82:6 .
The term 
omos (law) applying here to the entire O.T. as in
 12:34  15:25  Ro 3:19  1Co 14:21 . Aleph D Syr-sin. omit
hum(936e), but needlessly. We have it already so from Jesus in
 8:17 . They posed as the special custodians of the O.T. {I said}
(hoti eg(9320)eipa). Recitative hoti before a direct quotation
like our quotation marks. Eipa is a late second aorist form of
indicative with -a instead of -on. {Ye are gods} (	heoi
este). Another direct quotation after eipa but without hoti.
The judges of Israel abused their office and God is represented
in  Ps 82:6  as calling them "gods" (	heoi, _elohim_) because
they were God's representatives. See the same use of _elohim_ in
 Ex 21:6  22:9,28 . Jesus meets the rabbis on their own ground in
a thoroughly Jewish way.