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In Pauls letter to Timothy are the job qualifications to be a minister of God, amongst them: "A man married to one wife."

"amongst them", yes, but not limited to that one condition. Paul himself chose celibacy and encouraged it.

1 Cor 7:6-7: This I say by way of concession, however, not as a command. Indeed, I wish everyone to be as I am (single? widowed?), but each has a particular gift from God, one of one kind and one of another.
1 Cor 7:32-34: I should like you to be free of anxieties. An unmarried man is anxious about the things of the Lord, how he may please the Lord. But a married man is anxious about the things of the world, how he may please his wife, and he is divided. An unmarried woman or a virgin is anxious about the things of the Lord, so that she may be holy in both body and spirit. A married woman, on the other hand, is anxious about the things of the world, how she may please her husband.