The meaning of “θερμαίνω”

“And Peter followed him afar off, even into the palace of the high priest: and he sat with the servants, and warmed himself at the fire.”

“And when she saw Peter warming himself, she looked upon him, and said, And thou also wast with Jesus of Nazareth.”

“And the servants and officers stood there, who had made a fire of coals; for it was cold: and they warmed themselves: and Peter stood with them, and warmed himself.”

“And Simon Peter stood and warmed himself. They said therefore unto him, Art not thou also one of his disciples? He denied it, and said, I am not.”

“And one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?”