'Behind' in the Bible

Having said these things to them, He stayed behind in Galilee.

So when it was evening on that same day, the first day of the week, though the disciples were [meeting] behind barred doors for fear of the Jews, Jesus came and stood among them, and said, “Peace to you.”

Eight days later His disciples were again inside the house, and Thomas was with them. Jesus came, though the doors had been barred, and stood among them and said, “Peace to you.”