***15 But the spiritual man judgeth all things; and he himself is judged of no man. ***
To use this verse as “evidence” of solo-scriptura would be to apply a subjective interpretation on it from the get-go. We as Catholics should look at this verse and ask “what is the correct interpretation of this verse?” We all can sit here and take a crack at it and 10 of us on this forum could come up with 10 different opinions if we apply the principles of solo-scriptura, and what would give any of us more authority than the other? Thank God we have a Church that traces back to the Apostles that has the authority to interpret this correctly!
The CCC says 2038 In the work of teaching and applying Christian morality, the Church needs the dedication of pastors, the knowledge of theologians, and the contribution of all Christians and men of good will. Faith and the practice of the Gospel provide each person with an experience of life “in Christ,” who enlightens him and makes him able to evaluate the divine and human realities according to the Spirit of God. Thus the Holy Spirit can use the humblest to enlighten the learned and those in the highest positions.
St. Thomas says
**Reply to Objection 1.**I] Judgment belongs to truth as its standard, while it belongs to the man imbued with truth, according as he is as it were one with truth, as a kind of law and “living justice” [Aristotle, Ethic. v]. Hence Augustine quotes (De Verb. Dom., Serm. cxxvii) the saying of 1 Corinthians 2:15: “The spiritual man judgeth all things.” But beyond all creatures Christ’s soul was more closely united with truth, and more full of truth; according to John 1:14: “We saw Him . . . full of grace and truth.” And according to this it belongs principally to the soul of Christ to judge all things.