'Chest' in the Bible

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

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?")

and in the midst of the lampstands [one] like a son of man, dressed in [a robe] reaching to the feet and girded around his chest [with] a golden belt,