en_tn_lite_do_not_use/jhn/20/26.md

his disciples

The word "his" refers to Jesus.

while the doors were closed

You can translate this in an active form. Alternate translation: "when they had locked the doors" (See: rc://en/ta/man/jit/figs-activepassive)

Peace to you

This is a common greeting that means "May God give you peace" .