Genesis 42:13-15

Young's Literal Translation

¹³ and they say, `Thy servants [are] twelve brethren; we [are] sons of one man in the land of Canaan, and lo, the young one [is] with our father to-day, and the one is not.'

¹⁴ And Joseph saith unto them, `This [is] that which I have spoken unto you, saying, Ye [are] spies,

¹⁵ by this ye are proved: Pharaoh liveth! if ye go out from this -- except by your young brother coming hither;