There IS such a principle and that's the whole point. The context of Paul's comments is that "THE SAINTS" and not just the pastors/elders/deacons/etc. "shall judge the world" (I Corinthians 6:2). IOW, there's not supposed to be a chasm of sorts which separates one from the other. Please notice to whom this epistle was addressed:
I Corinthians chapter 1
[1] Paul, called to be an apostle of Jesus Christ through the will of God, and Sosthenes our brother,
[2] Unto the church of God which is at Corinth, to them that are sanctified in Christ Jesus, called to be saints, with all that in every place call upon the name of Jesus Christ our Lord, both theirs and ours:
[3] Grace be unto you, and peace, from God our Father, and from the Lord Jesus Christ.
This wasn't one of Paul's "pastoral epistles", but rather an epistle which was addressed to ALL OF THE SAINTS at Corinth. In fact, Paul spent considerable time in the opening portion of this epistle REPROVING the saints for being "carnal" or for thinking too highly of the likes of himself, Cephas/Peter and Apollos. Furthermore, there are none more qualified to judge than those who truly are "less esteemed" in their own eyes as opposed to THE PROUD. Paul's instructions to the church at Philippi were the following:
Philippians chapter 2
[1] If there be therefore any consolation in Christ, if any comfort of love, if any fellowship of the Spirit, if any bowels and mercies,
[2] Fulfil ye my joy, that ye be likeminded, having the same love, being of one accord, of one mind.
[3] Let nothing be done through strife or vainglory; but in lowliness of mind let each esteem other better than themselves.
[4] Look not every man on his own things, but every man also on the things of others.
The saints are called to "esteem others better than themselves", so how do you know that Paul wasn't addressing the same here? When it came to the matter of the man who was committing fornication with his father's wife, Paul's instructions were to THE ENTIRE CHURCH BODY and NOT to merely "the clergy". Isn't this so? It most certainly is so. Furthermore, a little bit later on in this very same epistle, this same Paul had the following to say:
I Corinthians chapter 12
[12] For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ.
[13] For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
[14] For the body is not one member, but many.
[15] If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body?
[16] And if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body?
[17] If the whole body were an eye, where were the hearing? If the whole were hearing, where were the smelling?
[18] But now hath God set the members every one of them in the body, as it hath pleased him.
[19] And if they were all one member, where were the body?
[20] But now are they many members, yet but one body.
[21] And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you.
[22] Nay, much more those members of the body, which seem to be more feeble, are necessary:
[23] And those members of the body, which we think to be less honourable, upon these we bestow more abundant honour; and our uncomely parts have more abundant comeliness.
[24] For our comely parts have no need: but God hath tempered the body together, having given more abundant honour to that part which lacked:
[25] That there should be no schism in the body; but that the members should have the same care one for another.
[26] And whether one member suffer, all the members suffer with it; or one member be honoured, all the members rejoice with it.
Why did Paul address how one part of the body cannot say to another part of the body, "I have no need of you"?
Why did Paul address how we need to "bestow more abundant honor to our uncomely parts" and that God "has given more abundant honor to that part which lacks"?
It seems to me that Paul addressed such matters because the Corinthians were guilty of "esteeming" OTHERS "less" than THEMSELVES, as opposed to the other way around, WITHIN THE BODY OF CHRIST and therefore hindering them from God's call upon their lives. Paul's understanding of "the gifts" which Christ has given to men is the following:
Ephesians chapter 4
[7] But unto every one of us is given grace according to the measure of the gift of Christ.
[8] Wherefore he saith, When he ascended up on high, he led captivity captive, and gave gifts unto men.
[9] (Now that he ascended, what is it but that he also descended first into the lower parts of the earth?
[10] He that descended is the same also that ascended up far above all heavens, that he might fill all things.)
[11] And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers;
[12] For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ:
[13] Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ:
[14] That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;
[15] But speaking the truth in love, may grow up into him in all things, which is the head, even Christ:
[16] From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love.
When Christ ascended, He "gave gifts unto men" and/or "grace according to the gift of Christ UNTO EVERY ONE OF US". Yes, the purpose of "the fivefold ministry" is to bring EVERY SAINT "unto a perfect (or mature) man, unto the measure of the stature of the fullness of Christ". Yes, "every joint" or "every part" of this overall "body" of Christ is to be "supplying" something and NOT just "the clergy". Is this what we see today? Hardly. In many (most?) cases, "the clergy" lords over the laity as opposed to being "the servants of all" as Jesus instructed.
You asked me:
Friend, the very man whose words we're now considering, the Apostle Paul himself, considered himself to be the "least esteemed":
"Unto me, who am less than the least of all saints, is this grace given, that I should preach among the Gentiles the unsearchable riches of Christ;" (Ephesians 3:8)
There's your answer.