'Says the Lord' in the Bible

It has been written in the law, That in other tongues and in other lips will I speak to this people; and not so will they hear me, says the Lord.

Therefore come out from the midst of them, and be separated, says the Lord, and touch not the unclean; and I will receive you.

And I will be to you for a Father, and ye shall be to me for sons and daughters, says the Lord Almighty.

For rebuking them, he says, Behold, the days come, says the Lord, and I will complete for the house of Israel and for the house of Judah a new covenant:

Not according to the covenant which I made to their fathers in the day of my taking their hand to bring them out of the land of Egypt; for they remained not in my covenant, and I heeded them not, says the Lord.

For this the covenant which I will set to the house of Israel after those days, says the Lord; giving my laws into their mind, and upon their hearts will I write them: and I will be to them for God, and they shall be to me for a people:

This the covenant which I will establish with them after those days, says the Lord, giving my laws upon their heart, and upon their minds will I write them;

For we know him having said, Vengeance to me, I will give back, says the Lord. And again, The Lord will judge his people.

I am the Alpha and the Omega, the beginning and the end, says the Lord, who being, and who was, and who coming, the Omnipotent Ruler.