I Corinthians 2:13

also--We not only know by the Holy Ghost, but we also speak the "things freely given to us of God" (Co1 2:12). which the Holy Ghost teacheth--The old manuscripts read "the Spirit" simply, without "Holy." comparing spiritual things with spiritual--expounding the Spirit-inspired Old Testament Scripture, by comparison with the Gospel which Jesus by the same Spirit revealed [GROTIUS]; and conversely illustrating the Gospel mysteries by comparing them with the Old Testament types [CHRYSOSTOM]. So the Greek word is translated, "comparing" (Co2 10:12). WAHL (Key of the New Testament) translates, "explaining (as the Greek is translated, Gen 40:8, the Septuagint) to spiritual (that is, Spirit-taught) men, spiritual things (the things which we ourselves are taught by the Spirit)." Spirit-taught men alone can comprehend spiritual truths. This accords with Co1 2:6, Co1 2:9-10, Co1 2:14-15; Co1 3:1. ALFORD translates, "Putting together (combining) spirituals with spirituals"; that is, attaching spiritual words to spiritual things, which we should not do, if we were to use words of worldly wisdom to expound spiritual things (so Co1 2:1, Co1 2:4; Pe1 4:11). Perhaps the generality of the neuters is designed to comprehend these several notions by implication. Comparing, or combining, spirituals with spirituals; implying both that spiritual things are only suited to spiritual persons (so "things" comprehended persons, Co1 1:27), and also that spiritual truths can only be combined with spiritual (not worldly-wise) words; and lastly, spirituals of the Old and New Testaments can only be understood by mutual comparison or combination, not by combination with worldly "wisdom," or natural perceptions (Co1 1:21-22; Co1 2:1, Co1 2:4-9; compare Psa 119:18).

The apostle proceeds with his argument in this chapter, and, I. Reminds the Corinthians of the plain manner wherein he delivered the gospel to them (Co1 2:1-5). But yet, II. Shows them that he had communicated to them a treasure of the truest and highest wisdom, such as exceeded all the attainments of learned men, such as could never have entered into the heart of man if it had not been revealed, nor can be received and improved to salvation but by the light and influence of that Spirit who revealed it (Co1 2:6 to the end).

2:13 using the Spirit’s words to explain spiritual truths: Just as spiritual wisdom is different from human wisdom, so the way spiritual wisdom is taught must be different from the way human wisdom is taught. The communicating and learning of spiritual truth must be done in the dimension and power of the Spirit; it is not simply a rational, human exercise.