God gave every believer the Holy Spirit so that every believer has the ability to interpret Scripture.
Where does Scripture give only a select few the authority to interpret Scripture? If not Scripture, then where does the authority come from?
Also, according to John 1:12, GOD gives all who receive Jesus the right and authority to become th children of God. If we are His children, then we DO have the right and ability to interpret His word to us because we have the mind of Christ.
And the proof is that every believer interprets Scripture inerrantly and exactly the same as all other believers?