Why is life after death so much more vague in the Old Testament, than it is in the New? I never really understood this, seeing that everyone ever born, has an eternal destiny.
Life after the resurrection for Old Testament Jews will be much different from what it will be for us. They weren’t promised eternity in Heaven the way the Church is. In Old Testament prophecy God promised Israel that He would live with them in the promised land forever (Ezekiel 43:4-7). Also their salvation was based on both the belief in a coming redeemer and adherence to the Law. Therefore their main thrust was in doing the things in this life that would make the next life the perfect extension it was meant to be.
However, We shouldn’t get the idea that descriptions of their eternity are either sparse or vague. Isaiah 2:1-5, 4:2-6, 35, 41:18-20, 60:10-22, 65:17-25, Micah 4:1-8 and Ezekiel 40-48 are some examples of life on Earth during the Millennium. In fact most of the Bible’s content on the Millennium is in the Old Testament and concerns Israel.