Revelation 19:5: And a voice came out of the throne, saying, Praise our God, all ye his servants, and ye that fear him, both small and great.

Worshipers in heaven praised Christ in Revelation 19:1-4,¹ and then a voice came out [from] the throne with instructions to the worshipers.² The voice came from Jesus Christ, who is the person seated on the throne in Revelation 19:5.³ He commands the worshipers in heaven to Praise our God,⁴ which means praise God the Father.⁵ This command is addressed to all God's servants,⁶ which is clarified to mean saints in the Joseph Smith Translation.⁷ The saints are the 144,000 Servants that stand with Christ on mount Zion⁸ as exalted members of the Church of the Firstborn.⁹ The 144,000 Servants include in their number the 24 Elders that worship Christ in Revelation 19:4.¹⁰

After Christ commands all exaltation-worthy people (servants) in heaven to praise our God, Christ then commands all others in heaven that fear (reverence)¹¹ God to do likewise.¹² The others in heaven are disembodied spirits of celestial-worthy people in celestial paradise who do not resurrect in the morning of the first resurrection before the Second Coming because they are not exaltation-worthy.¹³ They include every class of unexalted worshipers in heaven both small and great.¹⁴ The small and great worshipers include the four beasts in heaven which represent all classes of creation that qualify for celestial glory.¹⁵

Revelation 19:6: And I heard as it were the voice of a great multitude, and as the voice of many waters, and as the voice of mighty thunderings, saying, Alleluia: for the Lord God omnipotent reigneth.

After Christ directed all God-fearing persons and creatures in heaven to praise God the Father, John heard their deafening response.¹⁶ The praise came from the same voice of a great multitude or the great voice of much people from Revelation 19:1,¹⁷ amplified by all celestial-worthy creations in heaven described as the voice of many waters, and as the voice of mighty thunderings.¹⁸ The mighty thunderings repeat in part what John heard in Revelation 11:19, during his introductory vision of the Third Woe.¹⁹ Revelation 14:1-2 uses similar words to describe the new song that the 144,000 Servants sing when they stand with Christ on mount Zion at the end of the Second Woe and before the start of the Third Woe.²⁰

All the worshipers in heaven praise Christ, saying Alleluia (praise ye Jehovah) for the fourth time.²¹ They also praise the Lord God omnipotent, which is a title that applies to both the Father²² and the Son.²³ When Modern Babylon falls at the Second Coming,²⁴ the Father and the Son will both reign²⁵ as the Lord God omnipotent in heaven and on earth.²⁶ Both will reign in the kingdom of God and of his Christ, mentioned by John in Revelation 11:15.²⁷