'One' in the Bible

No one going as a soldier entangles himself with the affairs of life, that he may please him who has enlisted him as a soldier.

And if also any one contend in the games, he is not crowned unless he contend lawfully.

Yet the firm foundation of God stands, having this seal, The Lord knows those that are his; and, Let every one who names the name of the Lord withdraw from iniquity.

If therefore one shall have purified himself from these, in separating himself from them, he shall be a vessel to honour, sanctified, serviceable to the Master, prepared for every good work.