I think in practically every culture and language there is something to the effect: It is not the enemies or strangers I fear. It is people who call themselves friends that I am sometimes most concerned about. Or maybe there isn’t. But the Believers, what do they have to fear, right? For, God says in the Qur’an that he is their friend. Or as the Qur’an puts it: Allahu waliyyulladheena aamanoo. Paraphrase: “God is the friend of those who believe.” How much more comforting or empowering can anything get?