JMNT(i)
36 Now upon their speaking these things, He [other MSS: Jesus] himself stood in their midst, and proceeds to say, "Peace [= Shalom] to (or: [is] for; by; in; with) you folks."
37 Yet as [some] were being startled, while [other] were being terrified – then [all] were becoming ones in the grips of fear – they kept on supposing (imagining; assuming) to be presently watching (being a spectator of) a spirit or life-force.
38 Then He said to them, "Why are you folks shaken... troubled... disturbed? And because of what are reasonings and doubts repeatedly climbing up within the midst of your hearts?