'One' in the Bible

Have we not all one father? Hath not our God prepared us? Wherefore do we deal treacherously, Each against his brother, To pollute the covenant of our fathers?

And He did not make one only, And He hath the remnant of the Spirit. And what is the one alone! He is seeking a godly seed. And ye have been watchful over your spirit, And with the wife of thy youth, None doth deal treacherously.

And I have drawn near to you for judgment, And I have been a witness, Making haste against sorcerers, And against adulterers, And against swearers to a falsehood, And against oppressors of the hire of an hireling, Of a widow, and of a fatherless one, And those turning aside a sojourner, And who fear Me not, said Jehovah of Hosts.

Then have those fearing Jehovah spoken one to another, And Jehovah doth attend and hear, And written is a book of memorial before Him Of those fearing Jehovah, And of those esteeming His name.

And they have been to Me, said Jehovah of Hosts, In the day that I am appointing -- a peculiar treasure, And I have had pity on them, As one hath pity on his son who is serving him.