Congregational Leadership

So what is the role of leaders in the congregation? Consider the following:

Let the elders who rule well be considered worthy of double honor, especially those who labor in preaching and teaching. 1 Timothy 5:17
Remember your leaders, those who spoke to you the word of God. Consider the outcome of their way of life, and imitate their faith. Hebrews 13:7
Therefore an overseer must be above reproach... able to teach.1 Timothy 3:2
For an overseer, as God’s steward, must be above reproach… He must hold firm to the trustworthy word as taught, so that he may be able to give instruction in sound doctrine and also to rebuke those who contradict it. Titus 1:7, 9

New Testament apostolic authority is given to the congregation. Leaders are never appointed to serve not in the place of this authority that is properly held by the assembled body. Leaders are appointed to serve the congregation through the Word of God. Leaders in the church are to be about the business of teaching the scriptures, studying, correcting and training the people in the scriptures, rebuking those who are in error, and exhortation by the scriptures.
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, 17that the man of God may be competent, equipped for every good work.I charge you in the presence of God and of Christ Jesus, who is to judge the living and the dead, and by his appearing and his kingdom: 2preach the word; be ready in season and out of season; reprove, rebuke, and exhort, with complete patience and teaching. 2 Timothy 3:16-4:2