'One' in the Bible

For there is one God, and one mediator between God and men, the man Christ Jesus;

A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;

One that ruleth well his own house, having his children in subjection with all gravity;

Let the deacons be the husbands of one wife, ruling their children and their own houses well.

Let not a widow be taken into the number under threescore years old, having been the wife of one man,

I charge thee before God, and the Lord Jesus Christ, and the elect angels, that thou observe these things without preferring one before another, doing nothing by partiality.