And the Lord said, I have surely seen the affliction of my people which are in Egypt, and have heard their cry by reason of their taskmasters; for I know their sorrows…..And he said, Certainly I will be with thee: and this shall be a token unto thee, that I have sent thee: When thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain. 
Exodus 3:7-12
 
Jesus answered and said unto him, Get thee behind me, Satan, for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve. Luke 4:8