57:6He merges the night into the day, and He merges the day into the night; and He knows what the hearts contains.

57:16Is it not time for those who believe to surrender their hearts to the remembrance of God, and to the truth that has come down, and not be like those who were given the Book previously, but time became prolonged for them, so their hearts hardened, and many of them are sinners?

57:27Then We sent in their wake Our messengers, and followed up with Jesus son of Mary, and We gave him the Gospel, and instilled in the hearts of those who followed him compassion and mercy. But as for the monasticism which they invented—We did not ordain it for them—only to seek God’s approval. But they did not observe it with its due observance. So We gave those of them who believed their reward, but many of them are sinful.