Mr. Farah,
Great question you ask: "When should Christians abandon America?" Your thoughts resonate, to which I add these two of my own:
First, we are not Americans who are Christians. We are Christians who happen to be Americans. Keeping that focus, everything else comes into view. We are no more tied to our nation than we are tied to where we live within it. Our citizenship lies in heaven. Second, Jesus has already answered the question for us in Matthew 22:15-22: "Give to Caesar what is Caesar's and give to God what is God's." While my citizenship was determined by birth, my allegiance is with Christ. Until I go home to Him, I am his ambassador here in America. I must act accordingly.
Dietrich Bonhoeffer is a great example for us today. He spent the entirety of his life imploring the German people to turn to God, starting first – and most deliberately – with a church that had fallen asleep. Only when faced with certain extinction of the Jews and his fellow Christians did he abandon his country and actively resist ungodly authority. Had he not been executed I'm quite certain he would have continued leading the revival, which in turn would have healed a nation and reconciled it to God. What would the world look like today if Bonhoeffer had lived?
When should Christians abandon America? Let us first answer the question by asking who in America will stand in the gap created by a church and its flock who have fallen asleep?
Mr. Farah, you are a great voice in these difficult times. May God continue to bless you as you bless others. And may God continue to bless the United States of America.
Douglas B. Evans