Genesis 15 is all about Abram's seed, Yehovah's spiritually born men. In it we will see how the "430 days in Egypt" of Exodus 12 fits perfectly with the "400 days in Egypt" of Genesis 15; and discover how they both point to Yehovah's spiritually born men, His seed, Israel.
We will see the pillar of fire and smoke which led us out of Egypt prophesied in Abram's dream also.
http://weareisrael.org/2015/08/24/spiritually-born-seed/
My goal is always to promote Yehovah's image and kingdom in the earth; and to that end I began my http://weareisrael.org/ website 5 years ago. I have hundreds of articles on a large variety of topics for those who are new to Torah and for those who have studied it for many years. Please visit there now.