'Cleave' in the Bible

And Boaz saith unto Ruth, 'Hast thou not heard, my daughter? go not to glean in another field, and also, pass not over from this, and thus thou dost cleave to my young women:

And Ruth the Moabitess saith, 'Also he surely said unto me, Near the young people whom I have thou dost cleave till they have completed the whole of the harvest which I have.'