Nature gave a clear witness to the glory of God by the majesty declared in the heavens this Christmas Eve. People also gave a witness by testifying of their faith in Jesus. When the angel became a witness (in this passage), he refused honor or homage and reminded John, the apostle, that God alone should be worshiped. The angel gave a message that included a clear phrophetic witness regarding Jesus Christ our Lord (see V. 9). – Teresa
Revelation 19: 1-10 ( NLT) emphasis added
“After this, I heard what sounded like a vast crowd in heaven shouting,
“Praise the Lord![a]
Salvation and glory and power belong to our God.
2 His judgments are true and just.
He has punished the great prostitute
who corrupted the earth with her immorality.
He has avenged the murder of his servants.”
3 And again their voices rang out:
“Praise the Lord!
The smoke from that city ascends forever and ever!”
4 Then the twenty-four elders and the four living beings fell down and worshiped God, who was sitting on the throne. They cried out, “Amen! Praise the Lord!”
5 And from the throne came a voice that said,
“Praise our God,
all his servants,
all who fear him,
from the least to the greatest.”
6 Then I heard again what sounded like the shout of a vast crowd or the roar of mighty ocean waves or the crash of loud thunder:
“Praise the Lord!
For the Lord our God,[b] the Almighty, reigns.
7 Let us be glad and rejoice,
and let us give honor to him.
For the time has come for the wedding feast of the Lamb,
and his bride has prepared herself.
8 She has been given the finest of pure white linen to wear.”
For the fine linen represents the good deeds of God’s holy people.
9 And the angel said to me, “Write this: Blessed are those who are invited to the wedding feast of the Lamb.” And he added, “These are true words that come from God.”
10 Then I fell down at his feet to worship him, but he said, “No, don’t worship me. I am a servant of God, just like you and your brothers and sisters[c] who testify about their faith in Jesus. Worship only God. For the essence of prophecy is to give a clear witness for Jesus.[d]”