Numbers 21:8-10

Young's Literal Translation

⁸ And Jehovah saith unto Moses, `Make for thee a burning [serpent], and set it on an ensign; and it hath been, every one who is bitten and hath seen it -- he hath lived.

⁹ And Moses maketh a serpent of brass, and setteth it on the ensign, and it hath been, if the serpent hath bitten any man, and he hath looked expectingly unto the serpent of brass -- he hath lived.

¹⁰ And the sons of Israel journey, and encamp in Oboth.