How should nonbelievers be treated?
If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, which is as thine own soul, entice thee secretly, saying, Let us go and serve other gods, which thou hast not known, thou, nor thy fathers; Namely, of the gods of the people which are round about you ... Thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him: But thou shalt surely kill him; thine hand shall be first upon him to put him to death, and afterwards the hand of all the people. And thou shalt stone him with stones, that he die. Deuteronomy 13:6-10
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? ... Wherefore come out from among them, and be ye separate, saith the Lord. 2 Corinthians 6:14-17
Love and be kind to them.
Love thy neighbor as thyself. Leviticus 19:18, Matthew 22:39, Mark 12:31, Luke 10:27, Romans 13:9-10, Galatians 5:14, James 2:8