Every great mother Church, at first, had its own Gospel.
Ib.p.

288.
To say nothing here of the truer reading ("men of your nation"), there is no consequence in the argument.

The Ebionites were Christians in a large sense, men of Christian profession, nominal Christians, as Justin allowed the worst of heretics to be.

And this is all he could mean by allowing the Ebionites to be Christians.
I agree with Bull in holding [Greek: apo tou hymeterou genous] the most probable reading in the passage cited from Justin, and am by no means convinced that the celebrated passage in Josephus is an interpolation.
But I do not believe that such men, as are here described, ever professed themselves Christians, or were, or could have been, baptized.
Ib.p.

292.
Le Clerc would appear to doubt, whether the persons pointed to in Justin really denied Christ's divine nature or no.