Hey Gallenwalsh,
There are a couple scriptures that say "Lord of all the earth"
Also I'm unsure exactly what your asking?
Are you asking if Christ is lord of all??
or are you asking if demons can call Christ lord??
Ask for anyone calling Christ lord,
Here are some scriptures that reference I Cor 12:3
1Co 12:3 Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.
Mat 7:21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Mat 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mat 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Luk 6:46 And why call ye me, Lord, Lord, and do not the things which I say?
Luk 6:47 Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like:
Luk 6:48 He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock.
Luk 6:49 But he that heareth, and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great.
Antaiwan