Stood by them (epesth autoi). Ingressive aorist active indicative. Stepped by their side. The same word in Acts 12:7 of the angel there. Paul uses it in the sense of standing by in Acts 22:20 . It is a common old Greek word, episthmi. Were sore afraid (epobhqhsan pobon megan). First aorist passive indicative with cognate accusative (the passive sense gone), they feared a great fear.