God told Jeremiah to tell them to build houses and be at peace and their sons and daughters were to marry and reproduce and build up their nation in exile. I like to think that God through Jeremiah the Prophet gave them a timeline of seventy years. What interested me is this timeline was the exact existence of the reign of the kings of Babylon. We find these evidences in Daniel 5 & 9. That was when Cyrus the Persian, became king and sent the Jews back to build the temple. Is God really in charge?
When I come back now to our time I am still feeling that God is still the same today. I don't go with the flow of this evil world. It could be tough as there is more persecution of Christians today than ever before, but God is still on the throne.