“If the Holy Spirit, who ‘searcheth the deep things of God,’ 1 Cor. ii. 10. cannot be ignorant of anything that is God’s, then, as they who will not even allow Him to be equal must contend, the Holy Ghost is greater than the Son.” cf. this passage more fully treated of in Letter ccxxxvi. p. 276.  The above is rather a tentative memorandum than an explanation.