This is known from the Word, for the Lord said to the Jews,

Verily, verily, I say unto you, before Abraham was I am. John viii 58;

and elsewhere,

O Father, glorify thou me with the glory which I had with thee before the world was. John xvii 5.

By this is meant the Lord from eternity, and not a Son from eternity; for the Son is His Human, conceived of Jehovah the Father and born of the Virgin Mary in time, as was shown above. [2] That the Lord from eternity is Jehovah Himself appears from many passages in the Word, of which only these few will be adduced at present:

It shall be said in that day, This is our God; we have waited for Him that He may save us. This is Jehovah; we have waited for Him, we will be glad and rejoice in His salvation. Isa. xxv 9.

From these words it is evident that God Himself, even Jehovah, was waited for.

The voice of him that crieth in the wilderness, Prepare ye the way of Jehovah, make straight in the desert a highway for our God. The glory of Jehovah shall be revealed, and all flesh shall see it together. Behold, the Lord Jehovih will come with strong hand. Isa. xl 3, 5, 10; Matt. iii 3; Mark i 3; Luke iii 4.

Here also the Lord who was to come is called Jehovah.

[3] I, Jehovah.... will give thee for a covenant to the people, for a light of the Gentiles ...

I am Jehovah; that is my name: and my glory will I not give to another. Isa. xlii 6, 8.

The covenant to the people, and the light of the Gentiles is the Lord as to the Human. Because this is from Jehovah, and was made one with Jehovah, it is said, I am Jehovah; that is my name, and my glory will I not give to another; that is, to no other than to Himself. To give glory is to glorify, or to unite to Himself.

[4] The Lord, whom ye seek, shall suddenly come to His temple. Mal. iii 1. By the temple is meant the temple of His body, as in John ii 19, 21.

The Dayspring from on high hath visited us. Luke i 78.

The Dayspring from on high, also, is Jehovah, or the Lord from eternity.

From these passages it is evident that by the Lord from eternity is meant His originating Divine (Divinum a quo), which in the Word is Jehovah. However, from the passages which will be quoted below, it will be evident that by the Lord, and also by Jehovah after His Human was glorified, is meant the Divine and the Human together, as one (unum); and that by the Son alone is meant the Divine Human.