Exodus 19:5-6 King James Version (KJV)
5 Now therefore, if ye will obey my voice indeed, and keep my covenant, then ye shall be a peculiar treasure unto me above all people: for all the earth is mine:
6 And ye shall be unto me a kingdom of priests, and an holy nation. These are the words which thou shalt speak unto the children of Israel.
1 Peter 2:9-10 King James Version (KJV)
9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light;
10 Which in time past were not a people, but are now the people of God: which had not obtained mercy, but now have obtained mercy.