Genesis 42:33-34

ASV_Strongs(i)
  33 H376 And the man, H113 the lord H776 of the land, H559 said H3045 unto us, Hereby shall I know H3651 that ye are true H3240 men: leave H259 one H251 of your brethren H3947 with me, and take H7459 grain for the famine H1004 of your houses, H3212 and go your way;
  34 H935 and bring H6996 your youngest H251 brother H3045 unto me: then shall I know H7270 that ye are no spies, H3651 but that ye are true H5414 men: so will I deliver H251 you your brother, H5503 and ye shall traffic H776 in the land.