1 verse has
soften
in Edition Clear Qur'an by Talal Itani / Az-Zumar (The Groups)

39:23God has sent down the best of narrations: a Scripture consistent and paired. 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 whomever He wills. But whomever God leaves astray, for him there is no guide.