'Swords' in the Bible

The {buttery words} of his mouth were smooth, but [there was] battle in his heart. His words were smoother than oil, but they [were] drawn swords.

My soul [is] among lions. I lie down [among those who] devour-- the children of humankind whose teeth [are] spears and arrows and whose tongues [are] sharp swords.

Look, they pour out [talk] with their mouth. Swords [are] on their lips, for [they say], "Who hears?"