'Number' in the Bible

and Elijah taketh twelve stones, according to the number of the tribes of the sons of Jacob, unto whom the word of Jehovah was, saying, 'Israel is thy name;'

and thou, number to thee a force as the force that is fallen from thee, and horse for horse, and chariot for chariot, and we fight with them in the plain; are we not stronger than they?' and he hearkeneth to their voice, and doth so.