Here's some scripture from 1 Timothy 3 that discusses the qualities that should be present in those who seek leadership positions in the church. Now as you read, you will see that the overseers are to be married to one wife, that right there excludes any homosexual from ever attaining this position as overseer of a church.
One key to remember when reading and correctly interpreting scripture is to place yourself in the mindset of the author and his audience. While society today may consider one member of a homosexual couple to be the "wife" that is not the understanding the people at this time had of a wife. They regarded a wife as being a female who is married to male husband.
1Ti 3:1 The saying is trustworthy: If anyone aspires to the office of overseer, he desires a noble task.
1Ti 3:2 Therefore an overseer must be above reproach, the husband of one wife, sober-minded, self-controlled, respectable, hospitable, able to teach,
1Ti 3:3 not a drunkard, not violent but gentle, not quarrelsome, not a lover of money.
1Ti 3:4 He must manage his own household well, with all dignity keeping his children submissive,
1Ti 3:5 for if someone does not know how to manage his own household, how will he care for God's church?
1Ti 3:6 He must not be a recent convert, or he may become puffed up with conceit and fall into the condemnation of the devil.
1Ti 3:7 Moreover, he must be well thought of by outsiders, so that he may not fall into disgrace, into a snare of the devil.
1Ti 3:8 Deacons likewise must be dignified, not double-tongued, not addicted to much wine, not greedy for dishonest gain.
1Ti 3:9 They must hold the mystery of the faith with a clear conscience.
1Ti 3:10 And let them also be tested first; then let them serve as deacons if they prove themselves blameless.
1Ti 3:11 Their wives likewise must be dignified, not slanderers, but sober-minded, faithful in all things.
1Ti 3:12 Let deacons each be the husband of one wife, managing their children and their own households well.
1Ti 3:13 For those who serve well as deacons gain a good standing for themselves and also great confidence in the faith that is in Christ Jesus.