'Fast' in the Bible

So Jesus was saying to the Jews who had believed Him, “If you abide in My word [continually obeying My teachings and living in accordance with them, then] you are truly My disciples.

So she ran, as fast as she could, to find Simon Peter and the other disciple--the one who was dear to Jesus--and to tell them, "They have taken the Master out of the tomb, and we do not know where they have put Him."

If you remit the sins of any persons, they remain remitted to them. If you bind fast the sins of any, they remain bound."

Jesus saith unto them, Come and break your fast. And none of the disciples durst inquire of him, Who art thou? knowing that it was the Lord.

So when they had broken their fast, Jesus saith to Simon Peter, Simon,'son of John, lovest thou me more than these? He saith unto him, Yea, Lord; thou knowest that I love thee. He saith unto him, Feed my lambs.