God has sent down the best hadith, a book that is consistent, relating/contrasting/repeating. The skins of those who reverence their Lord shiver from it, then their skins and their hearts soften up to the remembrance of God. Such is God's guidance; He guides with it whoever He wills. For whomever God misguides, then none can guide him.
Translation endnotes
[39:23] Mutashabih means "similar" or "multiple-meaning" (3:7). However, when it is used for the entire book, which also contains single-meaning words, mutashabih should be understood as ‘similar’ or ‘consistent.’ Some statements of the Quran have multiple meanings (mutashabih) and all the statements of the Quran are consistent (mutashabih). Like its references, the word mutashabih itself has multiple meanings.