I don’t see that the Revelation verse says anything about what we are discussing.
And the verse in Psalms is a PROPHECY which is to David, but also to the coming Christ. It is to furnish what scripture says: ‘God says it BEFORE it is so no one can say otherwise’ (Psalm 33:9, paraphrased, which also applies to John 1:1 -‘God spoke it and it was!’)
The ‘Emmanuel’ title. What of it? A country is under attack by an enemy (Ukraine by Russia). The king (or President) of a mighty country sends aid to the beleaguered country. The people are extremely grateful and say:
You are saying that the aid that is sent IS AMERICA???
No! It is the SPIRIT, the POWER, the ESSENCE of the American spirit that is there… the defence (or offence) weaponry.
So too, Jesus is there as the power of God (the spirit of God IN HIM: the Holy Spirit of God!)
God said that he would send a saviour. The people were looking out for that saviour while under the oppression of the Roman overlords. Then, suddenly, the saviour SENT BY GOD is there. The people are ecstatic and call out: ‘Glory to God: God is with us!’
Jesus does not glorify in the name: ‘Emmanuel’ because he, at no time, usurps the authority of ‘Him who sent me!’
the application is that he was "begotten"
after he died. Before He was The Word = God
Yes God would send a Savior, Jesus
and God
is the Savior et al:
1-God is our judge (Ps 50:6, Eccl 12:14) Jesus is our judge (2Tim 4:1, Rev 20:12)
2-God is the temple of the New Jerusalem (Rev 21:22) Jesus Christ (the Lamb)is the temple of the New Jerusalem (Rev 21:22)
3-God is the first and the last (Is 44:6, 48:12) Jesus is the first and the last (Rev 22:13)
4-God is the beginning and the end (Rev 21:6) Jesus is the beginning and the end (Rev 22:13)
5-Only God can forgive sins (Lk 5:21) Jesus forgives sins (Lk 5:20)
6-God is our hope (Ps 71:5) Jesus is our hope (1Tim 1:11)
7-God is eternal(Deut 33:27) Jesus is eternal (Is 9:6, Heb 1:10-11)
8-God will come with the holy ones (Zech 14:5) Jesus will come with the holy ones (1Thess 3:13)
9-Only God is our savior (Is 43:11) Jesus is our savior (Tit 2:13, 2Pet 1:1)
10-God is the creator of the universe (Is 44:24, Jer 27:5) Jesus is (Jn 1:3)
11-To God, every knee will bow and every tongue confess (Is 45:22-23) To Jesus (Phil 2:10-11)
12-God is the same and His years will have no end (Ps 102:27) Jesus is the same and His years will have no end (Heb 1:12)
13-God is immutable (Mal 3:6) Jesus is immutable (Heb 13:8)
14-God is over all (Ps 97:9) Jesus is over all (Jn 3:31)
15-The spirit of God dwells in us (Rom 8:9) The spirit of Jesus dwells in us (Gal 4:6)
16-God is a stone of offence and a stumbling block (Is 8:14) Jesus is a stone of offence and a stumbling block (1Pet 2:8)
17-God is our shepherd (Ps 23:1) Jesus is our shepherd (Jn 10:11, 1Pet 5:4, Heb 13:20)
18-God is our Lord of Lords (Deut 10:17, Ps 136:3) Jesus is Lord of Lords (Rev 17:14)
19-God is our only rock (Is 44:8, Ps 18:2, 94:22) Jesus is our rock (1Cor 10:4)
20-No one can snatch us out of Gods hand (Deut 32:39) No one can snatch us out of Jesus hand (Jn 10:28)
21-God is the horn of salvation (2Sam 22:3) Jesus is the horn of salvation (Lk 1:68-69)
22-God renders according to our works (Ps 62:12) Jesus renders according to our works (Mt 16:27, Rev 22:12)
23-God loves and corrects (Prov 3:12) Jesus loves and corrects (Rev 3:19)
24-Gods words will stand forever (Is 40:8) Jesus words will stand forever (Mt 24:35)
25-God is the eternal light (Is 60:19) Jesus is the eternal light (Jn 8:12, Rev 21:3)
26-God seeks to save the lost (Ez 34:16) Jesus seeks to save the lost (Lk 19:10)
27-Paul is a slave of God (Tit 1:1) Paul is a slave of Christ (Rom 1:1)
28-God raised Jesus from the dead (Gal 1:1) Jesus raised himself from the dead (Jn 2:19-21)
29-God is our guide (Ps 48:14) Jesus is our guide (Lk 1:79)
30-God is our deliverer (Ps 70:5, 2Sam 22:2) Jesus is our deliverer (Rom 11:26)
31-God is called God (Is 44:8) Jesus is called God (Jn 20:28)
32-God is the king of Israel (Is 44:6) Jesus is the king of Israel (Mt 27:42, Jn 1:19)
33- God is the Alpha and Omega (Rev 1:8) Jesus is the Alpha and Omega (Rev 22:13)
34- God is the king of Kings (1 Tim 5:15-16) Jesus is the King of Kings (Rev 17:14)
35- God is Lord over all ( Gal 4:6 ) and Jesus is Lord over all ( Rom 10:12 )
You can't separate the two - They are part of the Godhead with the Holy Spirit