'One' in the Bible

But we know that the Law is good, if one uses it lawfully,

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

An overseer, then, must be above reproach, the husband of one wife, temperate, prudent, respectable, hospitable, able to teach,

He must be one who manages his own household well, keeping his children under control with all dignity

Deacons must be husbands of only one wife, and good managers of their children and their own households.

but in case I am delayed, I write so that you will know how one ought to conduct himself in the household of God, which is the church of the living God, the pillar and support of the truth.

Let no one look down on your youthfulness, but rather in speech, conduct, love, faith and purity, show yourself an example of those who believe.

A widow is to be put on the list only if she is not less than sixty years old, having been the wife of one man,