Exodus 19: 5 Now therefore, if you obey my voice and keep my covenant, you shall be my treasured possession out of all the peoples. Indeed, the whole earth is mine, 6 but you shall be for me a priestly kingdom and a holy nation. These are the words that you shall speak to the Israelites.”
1st Peter 2:9
But you are a chosen generation, a kingly priesthood, a holy nation, a purchased people: that you may declare his virtues, who hath called you out of darkness into his marvellous light: Who in time past were not a people: but are now the people of God. Who had not obtained mercy; but now have obtained mercy.