Hymn Lyrics Search - Name That Hymn

I'm looking for the composer to this song. I would appreciate any and all information.

Here are the first verse (I think) and chorus:

Now we're standing in His presence, in the presence of the king
I can hear a multitude of voices as all creation sings
Now we're watching from the grandstand, these mighty men of old
As the final curtain rises and redemption's plan unfolds...

Welcome to Mt. Zion, Heavenly Jerusalem
I can hear the angels singing Mt. Zion, Heavenly Jerusalem
Like a hundred oceans crashing, like thunder in the sky
About a billion voices singing glory to His name on high
For the Lord our God the Almighty, for the Lord God Almighty reigns.


Thank you! I desperately need this information.

Helen Baylor composed this song.