The Quran is described as instruction, healing for what is in hearts, guidance and mercy.
يَٰٓأَيُّهَا ٱلنَّاسُ قَدۡ جَآءَتۡكُم مَّوۡعِظَةࣱ مِّن رَّبِّكُمۡ وَشِفَآءࣱ لِّمَا فِي ٱلصُّدُورِ وَهُدࣰ ى وَرَحۡمَةࣱ لِّلۡمُؤۡمِنِينَ ٥٧
O mankind, there has to come to you instruction from your Lord and healing for what is in the breasts and guidance and mercy for the believers