But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such cases: but God hath called us to peace.

And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband: / But and if she depart, let her remain unmarried or be reconciled to her husband: and let not the husband put away his wife.

For all his judgments were before me: and as for his statutes, I did not depart from them.

And Jonadab, the son of Shimeah David's brother, answered and said, Let not my lord suppose that they have slain all the young men the king's sons; for Amnon only is dead: for by the appointment of Absalom this hath been determined from the day that he forced his sister Tamar.

You must recognize that the way to get the good out of your brother and your sister is not to return evil for evil.

They cried unto them, Depart ye; it is unclean; depart, depart, touch not: when they fled away and wandered, they said among the heathen, They shall no more sojourn there.