They profess (homologousin). Present active indicative of homologeoĢ, common verb (homou, legoĢ) as in Rom 10:10. Eidenai (know) is second perfect active infinitive of oida in indirect assertion.
By their works (tois ergois). Instrumental case.
They deny (arnountai). Present middle of arneomai, old verb, common in the Gospels and the Pastoral Epistles (1Ti 5:8; Tit 2:12; 2Ti 2:12).
Abominable (bdeluktoi). Verbal adjective from bdelussomai. Only in lxx and here.
Disobedient (apeitheis). See note on Rom 1:30.
Reprobate (adokimoi). See note on 1Co 9:27; Rom 1:28.