'Shall' in the Bible

But he who looks carefully into the perfect law, the law of liberty, and faithfully abides by it, not having become a [careless] listener who forgets but an active doer [who obeys], he will be blessed and favored by God in what he does [in his life of obedience].

If, however, you are [really] fulfilling the royal law according to the Scripture, “You shall love your neighbor as yourself [that is, if you have an unselfish concern for others and do things for their benefit]” you are doing well.

For He who said, “Do not commit adultery,” also said, “Do not murder.” Now if you do not commit adultery, but you murder, you have become guilty of transgressing the [entire] Law.

Instead you ought to say, “If the Lord wills, we will live and we will do this or that.”