Believers! Do not offer friendship to those who are enemies of Mine and of yours. Would you show them affection when they have rejected the truth you have received; when they have driven you and the Messenger out [simply] because you believe in God, your Lord. If you have left your homes to strive for My cause and out of a desire to seek My goodwill, how can you secretly offer them friendship? I know all that you conceal and all that you reveal. Whoever of you does this will surely stray from the right path.