The Bible explains that there is NO Lord beside The Lord.
Isaiah 45:5 KJV
I am the Lord , and there is none else, there is no God beside me: I girded thee, though thou hast not known me:
There is only ONE Lord. As we venture into the New Testament, the Bible explains that Jesus Christ is Lord of all.
Acts 10:36 KJV
The word which God sent unto the children of Israel, preaching peace by Jesus Christ: (he is Lord of all:).
If Jesus is separate from God, then He cannot be Lord of all. His Father would be Lord of all. However they both share this equality, that there is only One Lord, and Jesus Christ is The Lord.
In-fact, the Bible says that man cannot say Jesus is The Lord, unless they have the Holy Spirit dwelling in them.
1 Corinthians 12:3 KJV
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.
Can you say from your heart, that Jesus Christ is The Lord? This is no referring to a Lord, but The Lord.
The Bible also explains that The Holy Ghost, who is a person is The Lord also.
2 Corinthians 3:17 KJV
Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.
Showing forth the three persons of the Godhead. Which is recorded in 1 John 5:7
1 John 5:7 KJV
For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.