Amidst which (εν αιλ). That is, "in which offerings" (in presenting which offerings, Acts 21:27).

They found me (my accusers here present, ευρον με),

purified in the temple (ηγνισμενον εν τω ιερω). Perfect passive participle of αγνιζω (same verb in Acts 21:24; Acts 21:26) state of completion of the Jewish sacrifices which had gone on for seven days (Acts 21:27), the very opposite of the charges made.

With no crowd (ου μετα οχλου). "Not with a crowd" till the Asiatic Jews gathered one (Acts 21:27).

Nor yet with tumult (ουδε μετα θορυβου). They made the tumult (Acts 27:30), not Paul. Till they made the stir, all was quiet.