This name, the Lord of Hosts, is nevertheless usually attributed to the Father and I don't think anyone would argue with that part, even though the plurality idea might be controversial to some.

Earlier in Isaiah, in Chapter 6, we see the Lord commissioning him to take a message to the people of Israel.

Isa 6:8 And I heard the voice of the Lord saying, “Whom shall I send, and who will go for us?” Then I said, “Here I am! Send me.” 9 And he said, “Go, and say to this people:

“‘Keep on hearing, but do not understand;
keep on seeing, but do not perceive.’
10 Make the heart of this people dull,
and their ears heavy,
and blind their eyes;
lest they see with their eyes,
and hear with their ears,
and understand with their hearts,
and turn and be healed.”

So here we have the Lord God speaking to Isaiah and sending him out on this mission.

Later, we do find reference to this passage elsewhere in the bible. One such place is in the gospel attributed by many to John, in Chapter 12, verse 41. The odd thing though is the writer says it was Jesus that Isaiah saw which led to his having the revelation to record for us!

John 12:37 Though He (Jesus) had done so many signs before them, they still did not believe in Him, 38 so that the word spoken by the prophet Isaiah might be fulfilled:

“Lord, who has believed what he heard from us, and to whom has the arm of the Lord been revealed?”

39 Therefore they could not believe. For again Isaiah said,

40 “He has blinded their eyes
and hardened their heart,
lest they see with their eyes,
and understand with their heart, and turn,
and I would heal them.”
41 Isaiah said these things because he saw His (Jesus') glory and spoke of Him.

So in the passage above the writer tells us that Isaiah saw Jesus and spoke about Him!

But then, Paul tells us this in the book of Acts (as recorded by Luke).

Acts 28:25 And disagreeing among themselves, they departed after Paul had made one statement: “The Holy Spirit was right in saying to your fathers through Isaiah the prophet:

26“‘Go to this people, and say,
“You will indeed hear but never understand,
and you will indeed see but never perceive.”
27For this people’s heart has grown dull,
and with their ears they can barely hear,
and their eyes they have closed;
lest they should see with their eyes
and hear with their ears
and understand with their heart
and turn, and I would heal them.’

So according to Paul it was Holy Spirit who said it to Isaiah!

The Father, Jesus, Holy Spirit. Each gave this prophesy to Isaiah! And there is only a need to ascribe it to three beings if they wanted to counteract future heresies that God was not triune!

What does this tell you? I know what it tells me...
God is not a man, that we can limit to our reality! All three are ONE God and if any does something since they agree in unity all do it!

There are other incidents in the Old Testament that are there ascribed to the Lord of Hosts and which are also ascribed to Jesus and to Holy Spirit! For instance, in the O.T. the murmering and rebellion of the children of Israel is said to be against Jehovah.

Deuteronomy 1:26 "Yet you were not willing to go up, but rebelled against the command of the LORD your God;

If we read Isaiah 1, verses 2 to 5, we see that the rebellion of the children of Israel is said to be against the "Holy One of Isreal". Against Jesus in other words, for Jesus is the Holy One of Israel.

Isaiah 1:2-5 Listen, O heavens, and hear, O earth; For the LORD speaks, "Sons I have reared and brought up, But they have revolted against Me. "An ox knows its owner, And a donkey its master's manger, But Israel does not know, My people do not understand." Alas, sinful nation, People weighed down with iniquity, Offspring of evildoers, Sons who act corruptly! They have abandoned the LORD, They have despised the Holy One of Israel, They have turned away from Him.

In this passage in Isaiah we are told that Israel rebelled against Jesus but on the other hand if we look at Hebrews 3:7-9 we see this...

Heb 3:7-9 Therefore, as the Holy Spirit says, “Today, if you hear His voice, do not harden your hearts as in the rebellion, on the day of testing in the wilderness, where your fathers put Me to the test and saw My works for forty years.

Actually we could have gotten the witness of all three being involved from the Old Testament alone! Have a look at Isaiah 63:10...

Isaiah 63:10 But they rebelled and grieved His Holy Spirit; Therefore He turned Himself to become their enemy, He fought against them.

So according to Isaiah and the book of Hebrews it was the Holy Spirit that they murmured and rebelled against!

Again, we see that God is ONE but also more than one. Our God is indeed triune.

We can as a further example of the triune nature of God, look at their actions and interactions in the resurrection of Jesus from the dead.

First it must be accepted that, in His humanity, Jesus could not bring Himself back from the dead! So, since Jesus’ resurrection was a work of deity, the Son, in His divine nature, also effected His resurrection!

God raised Jesus from the dead, but it was not the work of just one person in the Godhead. Instead, the Father, the Son, and the Holy Spirit together raised Jesus to new life after the crucifixion.

According to Galatians 1:1, God the Father raised Christ from the dead.

Gal 1:1 Paul, an apostle—sent not from men nor by man, but by Jesus Christ and God the Father, who raised Him from the dead—

In John 10:17-18, the Son of God tells us that He has authority to lay down His life and take it up again!

Joh 10:17-18 The reason the Father loves Me is that I lay down My life in order to take it up again. No one takes it from Me, but I lay it down of My own accord. I have authority to lay it down and authority to take it up again. This charge I have received from My Father.”

Yet, Paul explains in Romans 8:11 that the Spirit of God resurrected our Savior.

Rom 8:11 The Holy Spirit raised Jesus from the dead. If the same Holy Spirit lives in you, He will give life to your bodies in the same way. (New Life Version)

This common act by the three divine persons illustrates the Trinitarian principle that in all of God’s works outside Himself (ad extra), Father, Son, and Spirit act as one. We cannot say that one person acts apart from the others; rather, because all three share the same divine nature and power, whatever that power effects is effected by all of them. This does not mean there are no distinctions to be noted in their common acts. In the resurrection, for example, the Father is the subject of the action, the Son is both subject and object (because it is Christ, as the incarnate God-man, who is restored to life), and the Spirit is both subject and indwelling agent of Christ through whom the Father and Son enliven the flesh of the Son.

But again we see the trinity at work, all raising Jesus from the dead!

May the grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Ghost, be with you all. (2 Cor 13:14)
Amen.

Best wishes for grace and the peace of Jesus.

Attlee.

Is Holy Spirit God? Click Here.
Is Jesus God? Click Here.