1 Corinthians
King James Version (KJV)

“Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.”
King James Version (KJV)
2:13 Which also we speak - As well as know. In words taught by the Holy Spirit - Such are all the words of scripture. How high a regard ought we, then, to retain for them! Explaining spiritual things by spiritual words; or, adapting spiritual words to spiritual things - Being taught of the Spirit to express the things of the Spirit.
1Co 2:13 Which things also we speak. The grand truths, "the hidden wisdom" (1Co 2:7), "the mystery of God" (Col 2:2), revealed to them through the Spirit, they spoke to others. These things they spoke, not in the words which man's wisdom teacheth, not in the garb of philosophy, but which the Holy Ghost teacheth. In the words given by the Holy Spirit. Comparing spiritual things with spiritual. This difficult clause has received many explanations. Canon Cook explains it: "Matching spiritual things with spiritual words". Conybeare and Howson say: "Explaining spiritual things to spiritual men". This last view, which Canon Cook says does no violence to the Greek, harmonizes best with 1Co 2:6,14. I think that the next verse shows that this is the true meaning.