Al-Baqarah · 2:7

7. Allah has sealed their hearts, locking inside them their falsehood, and has placed a seal on their hearing, so that they do not listen to nor accept the truth. He has put a cover over their eyes, so that they do not see the truth in its clarity. They will suffer greatly. After describing the disbelievers, who are at fault inside and out, He describes the hypocrites, who appear good on the outside, but are not so inwardly: