Deuteronomy 33:29
29 Happy are you, Israel: Who is like you, a people saved by Yahweh, The shield of your help, The sword of your excellency! Your enemies shall submit themselves to you; You shall tread on their high places.
Isaiah 27:1
1 In that day Yahweh with his hard and great and strong sword will punish leviathan the swift serpent, and leviathan the crooked serpent; and he will kill the monster that is in the sea.
Ephesians 6:17
17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God;