Reconcile with her. Admit to her you are in violation of your marriage vows and make it right. Until then you are disqualified from any ministry.
That is from the Bible itself. and while we can and have debated on if sing;es/biblically dirvorced can assume pastor role, hopefully, we are can agree that the Bible teaches to us that a Christian cannot divorce another believer and not reconcile back to her, and if she has not yet remarried, to attempt to come back together again before the lord!