3:118

O believers! Do not make intimate friendships with any but with your own people. The unbelievers will not miss any opportunity to corrupt you. They desire nothing but your destruction: their malice has become evident from what they say; and what they conceal in their hearts is far worse. We have made Our signs clear to you, if you will understand.
Meaning:-
Intimate: to have a close relationship : to be close friends
Corrupt you: to convince someone to do something wrong or illegal, dishonest or immoral
Malice: the intention or desire to do evil; ill will, harm, grudge
Conceal: Hide