Jesus gave many parables about being good stewards:
21 His lord said unto him, Well done, thou good and faithful servant: thou hast been faithful over a few things, I will make thee ruler over many things: enter thou into the joy of thy lord. (Matthew 25:21)
Jesus promised kingdoms and rulership to those who were faithful over what they were given:
6 And hath made us kings and priests unto God and his Father; to him be glory and dominion for ever and ever. Amen. (Revelation 1:6)
10 And hast made us unto our God kings and priests: and we shall reign on the earth. (Revelation 5:10)
A “theocracy” is the government of God and those who rule under Him on earth will be “kings” over “kingdoms” and may rightly be called New World Kings.