RUTH 1:16-17 kjv
And Ruth said, Entreat me not to leave thee, or to return from following after thee: for whither thou goest, I will go; and where thou lodgest, I will lodge: thy people shall be my people, and thy God my God:
Where thou diest, will I die, and there will I be buried: the Lord do so to me, and more also, if ought but death part thee and me.
And Elijah said unto Elisha, Tarry here, I pray thee; for the Lord hath sent me to Beth–el. And Elisha said unto him, As the Lord liveth, and as thy soul liveth, I will not leave thee. So they went down to Beth–el.
(YOU MUST NOT DISENGAGE FROM THE SOURCE/CHANNEL OF YOUR PURPOSE)