13. From Him who is, who was, and is to come, signifies, from the Lord who is eternal and infinite, and Jehovah. That it is the Lord, appears clearly from what follows in this chapter, where it is said that he heard a voice from the Son of man, saying:
I am the Alpha and the Omega, the First and the Last (Rev. 1:11-13);
I am the First and the Last (Rev. 1:17);
and in the following chapter (Rev. 1:8); and afterwards (Rev. 21:6; 22:12); and in Isaiah:
Thus saith Jehovah, the King of Israel, and His Redeemer Jehovah of Hosts: I am the First, and I am the Last, and besides Me there Is no God (Isa. 44:6);
also (48:12); and He who is the First and the Last, is He who is, and who was, and who is to come.
 This also is meant by Jehovah; for the name Jehovah signifies is; and He who is, or who is Esse itself, the same is also He who was, and is to come, for in Him the past and the future are present; hence He is without time eternal, and without place infinite. This also is acknowledged by the church in the Doctrine of the Trinity, called Athanasian, in which are these words: "The Father is eternal and infinite, the Son is eternal and infinite, and the Holy Spirit is eternal and infinite, but yet there are not three eternals and infinites, but one;" that this one is the Lord, is demonstrated in The Doctrine of the New Jerusalem concerning the Lord.