Salvation not by Works

[9] After this I looked and there before me was a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb.

They were wearing white robes and were holding palm branches in their hands.

[10] And they cried out in a loud voice:

"Salvation belongs to our God,
who sits on the throne,
and to the Lamb."

[11] All the angels were standing around the throne and around the elders and the four living creatures. They fell down on their faces before the throne and worshiped God,

[12] saying:

"Amen!
Praise and glory
and wisdom and thanks and honor
and power and strength
be to our God for ever and ever.
Amen!"

(Revelation 7:9-12)

This morning in church we sang a hymn which contained this phrase "Salvation belongs to our God".

What does this mean ?

One thing it must mean is that its' antithesis i.e. "salvation belongs to US" is completely excluded.

What does that imply ?

It implies that we [man] cannot do anything to earn, keep or work for salvation.

Isn't that great ?

Isn't that wonderful ?

Isn't that why the multitude are singing and praising the Lamb who is on the Throne ?