Question: where in the bible does it say sell your cloak and buy a sword?
Answer: They show when the passage is taken in context (Luke 22:36-38), Jesus is also aware of fulfilling prophecy and makes a surprising statement that two swords are "enough." He said to them, “But now if you have a purse, take it, and also a bag; and if you don't have a sword, sell your cloak and buy one.