William Spurstowe, one of the Westminster Divines, wrote on various topics on which to meditate over his life time. This quote comes from some of the mysteries one encounters in the Bible. The subject matter of meditation from which this quote came is “On the Bible.”
Was it ever heard, that he who was the maker of all things, was made of a Woman? That the Ancient of days was not an hour old? That Eternal life began to live? That he, to whose nature incomprehensibility does belong, should be enclosed in the narrow limits of the womb?
 William Spurstowe, The Spiritual Chymist: or, Six Decades of Divine Meditations on Several Subjects (London, 1666), 166.