'Shall' in the Bible

Keep your eyes on the field that they reap and go after them. Have I not ordered the servants not to bother you? And if you get thirsty, you shall go to the containers and drink from where the servants have drawn."

And Ruth the Moabite said, "Also, he said to me, 'You shall stay close with the servants which are mine until they have finished all of the harvest which is mine.'"

And when he lies, take notice of the place where he lies. And you shall go and {uncover} his feet and lie [down], and he shall tell you what to do."

And she said, "These six measures of barley he gave to me, for he said, 'You shall not go empty-handed to your mother-in-law.'"

He shall be for you a restorer of life and a sustainer in your old age, for your daughter-in-law who loves you, who [is] better for you than seven sons, has borne him."