Suppose a malicious partner cons you and takes away lots of money from you. You bring up this matter to a wise person who has experienced the ups and downs of life and want to consult him; that individual tends to give hope to you; in these situations there is an proverb among the religious people in my mother language which says:
"If God wishes, an enemy can become a source of good";
It means: "Don't worry; if God wishes, even the worst people cannot harm you and they will act as your friend in an unwanted way! Because it has been God's wish to protect you against any bad circumstance..."
Of course this is a direct translation, but I need to know if it makes sense in (especially) American English or there is another proverb for it.