Outstanding answer!Thanks.My opinion is that they should have spread monotheism to as many nations as possible(like Muslims did from their birth as an Umma)as soon as they got out of Egypt under Moses,instead of exterminating the inhabitants of Canaan.Maybe God's plan was to give them guiding,prophets and a holy Book in order to spread tawheed all over the World.But they kept God for themselves only and that's why He eventually got fed up with them and sent Muhammad and the Quran in order to at last teach monotheism to everyone.Maybe,if they had spread monotheism to all nations,God would have never needed to send Muhammad to accomplish this.Can this be a possibility?