Ruth 1:15, 16, 17, 18

And she said, Hinei, thy sister-in-law is gone back unto her people, and unto her g-ds; return thou after thy sister-in-law.

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 G-d shall be Elohai

Where thou diest, will I die, and there will I be buried. HASHEM do so to me, and more also, if anything but HaMavet part thee and me.

When she saw that she was steadfastly minded to go with her, then she left urging her.