As I thought through this passage it occurs to me that perhaps all that go through difficult times entertain these questions. I wonder if it is not true that most of us think that if we are following Christ pretty much all of life should work out fairly well. So if something is not going well, if there is a season of suffering or difficulty we wonder if we are really walking with God. Further, there are those in the evangelical community that will help you ask that question if it has not occurred to you as yet.
affliction and suffering are promised to those who choose to follow Christ. (I did a quick search at Bible Gateway for you to validate the point click on the words in the previous sentence to see the results in the ESV, you could also look at tribulation.)
It is the case that if we are attempting to follow Christ in the midst of enemy territory, which at this moment is the condition of this world. It stands to reason that the one who prowls about like a roaring lion seeking to devour and all of his legions might just find our existence offensive and put up some resistance.
That does not mean that all of the hardships we are facing are from the enemy, but it does beg the question. Perhaps it is something that we should ask the Lord about. It is His answer that matters not the opinion of the accusers be they well meaning members of the community or the enemy.