Allah made a covenant with the Children of Israel and raised among them twelve chieftains. He said: 'I shall be with you and if you establish the prayers and pay the obligatory charity; if you believe in My Messengers and assist them and give Allah a generous loan, I shall forgive you your sins and admit you to Gardens underneath which rivers flow. Whosoever amongst you disbelieves after that, he indeed has strayed from the Straight Path'