ectypal.net

...that the testimony of the Holy Spirit does not reveal to us any of these truths, nor even enables us by reflection to infer them from the nature of our spiritual life. The illumination of the Holy Spirit is not the cognitive source of Christian truth. It does not disclose to us any material truths that are hidden from the “natural” [unspiritual] person. It only gives us a spiritual understanding of these same things, one that is different and deeper. Paul expressly states that the Spirit makes known to us the things objectively granted us by God in Christ (1 Cor. 2). The Spirit whom believers receive is the Spirit of Christ, who takes everything from Christ and is received from the preaching of the gospel (John 14:17; Acts 5:32; Gal. 3:2; 4:6; 1 John 2:20, 24, 27). But the truths themselves are known to us from other parts of Scripture; they are only subjectively sealed by the witness of the Holy Spirit.