Joined in the charge (sunepethento). Second aorist middle indicative of sunepitithēmi, old verb, double compound, to place upon (epi) together with (sun), to make a joint attack, here only in the N.T.
Affirming (phaskontes). Alleging, with the accusative in indirect assertion as in Act 25:19; Rom 1:22 (nominative with infinitive, Robertson, Grammar, p. 1038).
Were so (houtōs echein), “held thus,” common idiom.