Maybe the pastor is just following the counsel of the ECFA:
Same Sex Marriage...Legal Implications for Churches (PDF)
"Do churches that are opposed doctrinally to same-sex marriages need to amend their bylaws?
In Most Cases – Not Necessary
1. No court in 238 years has found a minister liable for refusing to perform a marriage contrary to his or her religious beliefs (think incest, bigamy, etc.).
Yes but these are unparalleled times Jerome.
When I was a young man (50 years ago) no one, absolutely no one would have ever thought that baby-in-the-womb-murder would be legalized by the SCOTUS. Not only that we now have legalized "Death with dignity" in a few States including my own - Washington State AKA - assisted suicide. And if the victim is unable to decide (for whatever reason: epidemiological or other) on his/her own, then the presiding doctor can decide for him/her to off the person. Euthanasia in disguise.
2. Many church bylaws already contain doctrinal statements that are broad enough to bar same sex marriage.
That is not exactly the issue IMO Jerome. If may soon be that if certain persons win the administration seats new "hate laws" will be initiated which (unlike the immigration laws) will be enforced.
The central issue is found (but kind of hidden) in Jesus statement after Peter's confession in Matthew 16:
16 Thou art the Christ, the Son of the living God.
...
18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church;
and the gates of hell shall not prevail against it.
Gates of the cities in the desert plain were populated by Militants, financial types along with religious leaders, no one entered unless by consensus of these authorities.
In other words the "gates of hell" are representative of the authority figure(s) of hell - satan,
So this challenge to the local churches which is coming via our government shouldn't surprise us or cause us to fear but to face the reality:
Timothy 3:12 Yea, and all that will live godly in Christ Jesus shall suffer persecution.
Yes - easier said than done but these new "hate laws" may be the springboard to launch satan's plan against the church - but as Jesus said - the gates of hell shall not prevail against the church.
IMO the present institutional church may very well again be typified by the church of Smyrna:
Revelation 2
9 I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan.
10 Fear none of those things which thou shalt suffer: behold, the devil shall cast some of you into prison, that ye may be tried; and ye shall have tribulation ten days: be thou faithful unto death, and I will give thee a crown of life.
11 He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death.
The separating of the sheep from the goats is coming IMO.
The gathering of the tares from among the wheat...
An opportunity to glorify God (or be ashamed at His coming).
We need to pray for grace to endure to the end - His Appearing.
1 Peter 1:7 That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ:
My opinion of course (apart from the scripture quotes).
BTW, I don't mean we will go through the Tribulation but a purging/refining of the church preceding Jacob's trouble:
1 Peter 4:17 For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?
HankD