no ways repugnant to, but highly agreeable to God's holy word, and all Christian piety; neither are they to be counted among the doctrines and commandments of men, because they proceed not from mere human authority,
They certainly do.
The word bishops, by its derivation, signifies overseers, or superintendants
I would know, I have an ordained pastor.
To the word of his grace, to the protection of God's grace, given to those that preach the gospel,
Which is the word of God.
and administer the sacraments instituted by Christ.
The two ordinances.
Acts 9:17-19; Col 1:25; 1 Tim. 3:1; 1 Tim. 4:14; Titus 1:5; Luke 10:1; 2 Tim. 4:1-6; 1 Tim. 5:22; 2 Tim. 1:6; 2 Tim. 2:2
All of this is about ordaining pastors/bishops/overseers. None talking about creating new apostles. There are indeed two legitimate offices in every church as laid out in the New Testament, that of overseer and also of deacon. The apostles are those referred to specifically in John 17:18-19, as is evident from John 17:20. The idea of successor patriarchates is a later invention by sacerdotalism, not of God.
2 Cor. 1:21-22;
Talking about how all saved men receive the Holy Spirit (John 14:16-17; 1 Cor. 2:12-13; Ephesians 1:13-14; 1 John 2:27,3:24) and thereby the saved brethren are all priests. See Revelation 1:6, 1 Peter 2:9-10. Thus, this reference has no application to your point, because it applies to every saved individual. See also 2 Cor. 13:14.
See Hebrews 7:22.
therefore they are proper to be read and expounded by every ignorant man or woman?
1 Thessalonians 2:13
For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.
many adulterate and corrupt the word of God?
Yes, unsaved people, bringing a false gospel of works salvation have also tried to corrupt the word of God. Those are the two most forefront transgressions. Both by producing corrupt translations and also by clipping phrases out of scripture for deception purposes, deliberately acting heedless of any context, even if it was "well-meaning" according to their carnal understanding. Even by claiming authority to do this, thereby subverting whole households, seeking to glory themselves in another's flesh – I'm talking about catholic priests.
which the unlearned and unstable wrest, as also the other scriptures, to their own perdition?
a priest, a bishop, a man of God,
One is a man of God by being saved: priesthood of the believer. 1 Peter 2:9-10.
the traditions of the apostles and the interpretation of the Church, to which the apostles delivered both the book and the true meaning of it.
Well first of all, they delivered us the word of God, to be precise. Now since we are instructed to "continue in the things we have learned and have been assured of, knowing of whom we have learned them", then, combined with Galatians 1:9, that excludes shenanigans as another random guy coming later and adding to it. If you followed such things, you would then not be following the instructions in 2 Timothy 3:14. We don't know who these people are.
1 Timothy 3:14 starts by saying "But continue," because 1 Timothy 3:13, the previous verse, is the opposite of continuing only in those things that we have received directly, (Galatians 1:8-9), directly from the New Testament which is the report of the apostles. Those other people are the voice of a stranger, rather than the word of God, and I am following 2 Timothy 3:14, Galatians 1:9 and especially 2 Thessalonians 2:14 by rebuking the entire successor doctrine and their invention. They may try their absolute best, but they could never justify this if put in the presence of Scripture, which is the Word of God. It's just impossible.