Exodus 19:4-6 (KJV)
4 Ye have seen what I did unto the Egyptians, and how I bare you on eagles’ wings, and brought you unto myself.
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.