How can you preach without any authority?
You are wrong, matters around edifying God's kingdom do not require authority as we know it but a word from God; whosoever is given a prophesy or a word, they make it known and if they don't, the stones will do that work. Remember even John the baptist for all his works towards the kingdom is considered the least. So what authority are we talking about?
A spirit moves through the authority or order that God established from the foundations of this world and this kind of authority was what Paul targeted in his talks. Let me expound one of the verses:
1 Tim 2:
8Therefore I want the men everywhere to pray, lifting up holy hands without anger or disputing.
9I also want the women to dress modestly, with decency and propriety, adorning themselves, not with elaborate hairstyles or gold or pearls or expensive clothes,
10but with good deeds, appropriate for women who profess to worship God.
11A woman
a should learn in quietness and full submission.
12I do not permit a woman to teach or to assume authority over a man;
b she must be quiet.
13For Adam was formed first, then Eve.
14And Adam was not the one deceived; it was the woman who was deceived and became a sinner.
15But women
c will be saved through childbearing—if they continue in faith, love and holiness with propriety.
Adam had dominion/authority over the whole world. Even though Eve was the one who sinned, sin and therefore death is imputed on account of Adam and that's why sin came to the whole world (whatever Adam had dominion over, was affected). This is precisely how God sees and is what Paul was talking about in 1 Tim 2. And in this way, sin is defeated because the church is a bride who must submit in 'silence' to her husband Christ (God) and in this, our sins are imputed on His account who has already paid on our behalf.
And Paul is consisted in this context:
Eph 5:
21Submit to one another out of reverence for Christ.
22Wives, submit yourselves to your own husbands as you do to the Lord.
23For the husband is the head of the wife as Christ is the head of the church, his body, of which he is the Savior.
24Now as the church submits to Christ, so also wives should submit to their husbands in everything.
25Husbands, love your wives, just as Christ loved the church and gave himself up for her
26to make her holy, cleansing
b her by the washing with water through the word,
27and to present her to himself as a radiant church, without stain or wrinkle or any other blemish, but holy and blameless.
In submission to the authority as set by God. is what constitutes marriage. In a church setting, there's no marriage because anyone in the congregation could prophesy or share a word - but Paul was talking with respect to wives and husbands in the church settings.