But they were terrified and affrighted, and supposed that they beheld a spirit.

But they were full of fear, being of the opinion that they were seeing a spirit.

Εκεινοι δε εκπλαγεντες και εμφοβοι γενομενοι ενομιζον οτι εβλεπον πνευμα.

But they were terrified and affrighted, and supposed that they had seen a spirit.