“All things,” says He, “which the Father hath are mine.” Then why not His names also? When, therefore, you read of Almighty God, and the Most High, and the God of hosts, and the King of Israel, the “One that is,” consider whether the Son also be not indicated by these designations, who in His own right is God Almighty, in that He is the Word of Almighty God, and has received power over all; is the Most High, in that He is “exalted at the right hand of God,” as Peter declares in the Acts; is the Lord of hosts, because all things are by the Father made subject to Him; is the King of Israel because to Him has especially been committed the destiny of that nation; and is likewise “the One that is,” because there are many who are called Sons, but are not.
As if, indeed, He which is to come were not almighty; whereas even the Son of the Almighty is as much almighty as the Son of God is God.
Tertullian
Against Praxeas
Chapter XVII