I don't think the text forbids singlehood for Elders and Ministerial Servants, B_D.
It means if they are married, that it be to one woman only.
Paul extolled singlehood.
For I would that all men were even as I myself. But every man hath his proper gift of God, one after this manner, and another after that. I say therefore to the unmarried and widows, it is good for them if they abide even as I. 1 Cor 7:7-8