2Ti 2:2 And the things that you have heard from me among many witnesses, commit these to faithful men who will be able to teach others also.
Hebrews 13:7 is rarely preached on for two reasons: it offends the followers, and it offends the rulers in a church. The verse clearly teaches that people who have not taught a congregation the Word of God cannot be their leaders. They don't have to be the best teachers, and it doesn't require than to teach every Sunday, but before God makes a leader out of anyone, He makes a teacher out of him.
We have already seen that God tells us to take the lowest rooms in a church and to trust Him to advance us if it is His will. People who maneuver their way to the top through back-room church politics have not trusted God by obeying this command. They don't have a faith that we should follow.
And then it continues: "considering the outcome of their conduct." When people seize leadership out of God's will, failure often follows. Attendance declines, soul-winning declines, baptisms decline, and the quality of God's Word being taught declines.
These people can hold any office or title they want, but they don't have authority over you.