I find NO scripture that says a man who was divorced before his conversion is eligible to be a pastor. Just as you ask us for scripture that says he CANNOT be a pastor (which I feel we provided) .... I ask you for scripture that says he CAN.
Mal 2:16
"For the Lord God of Israel says That He hates divorce, For it covers one's garment with violence," Says the Lord of hosts. "Therefore take heed to your spirit, That you do not deal treacherously."
De 22:
28 "If a man finds a young woman who is a virgin, who is not betrothed, and he seizes her and lies with her, and they are found out, then the man who lay with her shall give to the young woman's father fifty shekels of silver, and she shall be his wife because he has humbled her; he shall not be permitted to divorce her all his days.
Mt 19:8
He said to them, "Moses, because of the hardness of your hearts, permitted you to divorce your wives, but from the beginning it was not so.
1 Co 7: But even if she does depart, let her remain unmarried or be reconciled to her husband. And a husband is not to divorce his wife...... 12 But to the rest I, not the Lord, say: If any brother has a wife who does not believe, and she is willing to live with him, let him not divorce her. 13 And a woman who has a husband who does not believe, if he is willing to live with her, let her not divorce him.
Matthew 5:32
but I say to you that everyone who divorces his wife, except for the reason of unchastity, makes her commit adultery; and whoever marries a divorced woman commits adultery.
Matthew 19:9
"And I say to you, whoever divorces his wife, except for immorality, and marries another woman commits adultery."