Joh 17:3  And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent. 

He alone has inhabited eternity.  He is Jehovah the self existent one.

Isa 57:15  For thus saith the high and lofty One that inhabiteth eternity, whose name is Holy; I dwell in the high and holy place, with him also that is of a contrite and humble spirit, to revive the spirit of the humble, and to revive the heart of the contrite ones. 

The following scriptures refer to the Father not Christ.

1Ti 6:15  Which in his times he shall shew, who is the blessed and only Potentate, the King of kings, and Lord of lords; 
1Ti 6:16  Who only hath immortality, dwelling in the light which no man can approach unto; whom no man hath seen, nor can see: to whom be honour and power everlasting. Amen. 

The Father is greater than Christ

Joh 14:28  Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I.