How can ye believe? (pōs dunasthe humeis pisteusai). Emphasis on “ye” (humeis), ye being what ye are. They were not true Jews (Rom 2:29; Est 9:28) who cared for the glory of God, but they prefer the praise of men (Mat 6:1.; Mat 23:5) like the Pharisees who feared to confess Christ (Joh 12:43).
From the only God (para tou monou theou). B and W omit theou which is certainly meant even if not genuine here. See Joh 17:3; Rom 16:27; 1Ti 6:15.