'Back' in the Bible

For this [reason] many of his disciples {drew back} and were not walking with him any longer.

And he said to him, "Go, wash in the pool of Siloam" (which is translated "sent"). So he went and washed and came back seeing.

He leaned back accordingly against Jesus' chest [and] said to him, "Lord, who is it?"

So when he said to them, "I am [he]," {they drew back} and fell to the ground.

Peter turned [and] saw the disciple whom Jesus loved following [them] (who also leaned back on his chest at the dinner and said, "Lord, who is the one betraying you?")