Only Mark contains the healing of the blind man from Bethsaida, highlighting several important spiritual truths. The miracle's location is part of its unique teaching.
The closer we get to God, the more likely we will have persecution, but also the greater and more real He becomes and the more likely we will serve Him correctly.
As long as we are slaves of sin and following the dictates of our lusts, we have no free moral agency. God liberates us from sin so we are free to obey Him.