Here are 8 Bible verses about defending your family from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Nehemiah 4:13-14 KJV
Therefore set I in the lower places behind the wall, and on the higher places, I even set the people after their families with their swords, their spears, and their bows. And I looked, and rose up, and said unto the nobles, and to the rulers, and to the rest of the people, Be not ye afraid of them: remember the Lord, which is great and terrible, and fight for your brethren, your sons, and your daughters, your wives, and your houses.
1 Timothy 5:8 KJV
But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel.
Exodus 22:2-3 KJV
If a thief be found breaking up, and be smitten that he die, there shall no blood be shed for him. If the sun be risen upon him, there shall be blood shed for him; for he should make full restitution; if he have nothing, then he shall be sold for his theft.
Luke 22:36 KJV
Then said he unto them, But now, he that hath a purse, let him take it, and likewise his scrip: and he that hath no sword, let him sell his garment, and buy one.
Luke 11:22 KJV
But when a stronger than he shall come upon him, and overcome him, he taketh from him all his armour wherein he trusted, and divideth his spoils.
Lamentations 3:30 KJV
He giveth his cheek to him that smiteth him: he is filled full with reproach.
Joshua 11:20 KJV
For it was of the LORD to harden their hearts, that they should come against Israel in battle, that he might destroy them utterly, and that they might have no favour, but that he might destroy them, as the LORD commanded Moses.
Psalms 68:12 KJV
Kings of armies did flee apace: and she that tarried at home divided the spoil.