Some quick verses from article (
http://www.biblicalselfdefense.com/ )
Psalm 82:4 Rescue the weak and needy; Deliver them out of the hand of the wicked.
Proverbs 24:11 Deliver those who are drawn toward death, And hold back those stumbling to the slaughter.
Ezekiel 33 "... 6 'But if the watchman sees the sword coming and does not blow the trumpet, and the people are not warned, and a sword comes and takes a person from them, he is taken away in his iniquity; but his blood I will require from the watchman's hand.'
Genesis 9:5-6 5 And surely your blood, the blood of your lives, will I require; At the hand of every beast will I require it. And at the hand of man, even at the hand of every man's brother, will I require the life of man. 6 Whoso sheddeth man's blood, by man shall his blood be shed: For in the image of God made he man.
Exodus 22:2-3 2 "If the thief is found breaking in, and he is struck so that he dies, there shall be no guilt for his bloodshed. 3 "If the sun has risen on him, there shall be guilt for his bloodshed.
Nehemiah 4 17 Those who were rebuilding the wall and those who carried burdens took their load with one hand doing the work and the other holding a weapon. 18 As for the builders, each wore his sword girded at his side as he built, while the trumpeter stood near me. ... 21 So we carried on the work with half of them holding spears from dawn until the stars appeared. .... 23 So neither I, my brothers, my servants, nor the men of the guard who followed me, none of us removed our clothes, each took his weapon even to the water.
Esther 8:11-12 11 By these letters the king permitted the Jews who were in every city to gather together and protect their lives -- to destroy, kill, and annihilate all the forces of any people or province that would assault them, both little children and women, and to plunder their possessions...
Esther 9:1-5 ...the Jews themselves overpowered those who hated them. 2 The Jews gathered together in their cities throughout all the provinces of King Ahasuerus to lay hands on those who sought their harm. And no one could withstand them, because fear of them fell upon all people.... 5 Thus the Jews defeated all their enemies with the stroke of the sword, with slaughter and destruction,
Samuel 13:19-22 9 Now there was no blacksmith to be found throughout all the land of Israel, for the Philistines said, "Lest the Hebrews make swords or spears."... 22 So it came about, on the day of battle, that there was neither sword nor spear found in the hand of any of the people who were with Saul and Jonathan. But they were found with Saul and Jonathan his son.
Psalm 144:1 Blessed be the LORD my strength, which teacheth my hands to war, and my fingers to fight:
Psalm 18:34 He teaches my hands to make war, So that my arms can bend a bow of bronze