Revelation 5:8

And when he took the scroll, the four living creatures and the twenty-four elders fell before the Lamb, having each one harps and golden vials full of perfumes, which are the prayers of the saints,

Psalm 141:2

My prayer is prepared -- incense before Thee, The lifting up of my hands -- the evening present.

Revelation 4:10

fall down do the twenty and four elders before Him who is sitting upon the throne, and bow before Him who is living to the ages of the ages, and they cast their crowns before the throne, saying,

Revelation 5:14

and the four living creatures said, 'Amen!' and the twenty-four elders fell down and they bow before Him who is living to the ages of the ages.

Revelation 15:2

and I saw as a sea of glass mingled with fire, and those who do gain the victory over the beast, and his image, and his mark, and the number of his name, standing by the sea of the glass, having harps of God,

Revelation 15:7

and one of the four living creatures did give to the seven messengers seven golden vials, full of the wrath of God, who is living to the ages of the ages;

Revelation 4:4

And around the throne are thrones twenty and four, and upon the thrones I saw the twenty and four elders sitting, clothed in white garments, and they had upon their heads crowns of gold;

Revelation 8:3-4

and another messenger did come, and he stood at the altar, having a golden censer, and there was given to him much perfume, that he may give it to the prayers of all the saints upon the golden altar that is before the throne,

Psalm 33:2

Give ye thanks to Jehovah with a harp, With psaltery of ten strings sing praise to Him,

Psalm 43:4

And I go in unto the altar of God, Unto God, the joy of my rejoicing. And I thank Thee with a harp, O God, my God.

Psalm 81:2

Lift up a song, and give out a timbrel, A pleasant harp with psaltery.

Psalm 150:3

Praise Him with blowing of trumpet, Praise Him with psaltery and harp.

John 5:23

that all may honour the Son according as they honour the Father; he who is not honouring the Son, doth not honour the Father who sent him.

Romans 14:10-12

And thou, why dost thou judge thy brother? or again, thou, why dost thou set at nought thy brother? for we shall all stand at the tribunal of the Christ;

Philippians 2:9-11

wherefore, also, God did highly exalt him, and gave to him a name that is above every name,

Hebrews 1:6

and when again He may bring in the first-born to the world, He saith, 'And let them bow before him -- all messengers of God;'

Revelation 4:8

And the four living creatures, each by itself severally, had six wings, around and within are full of eyes, and rest they have not day and night, saying, 'Holy, holy, holy, Lord God Almighty, who was, and who is, and who is coming;'

Revelation 5:6

and I saw, and lo, in the midst of the throne, and of the four living creatures, and in the midst of the elders, a Lamb hath stood as it had been slain, having seven horns and seven eyes, which are the Seven Spirits of God, which are sent to all the earth,

Revelation 7:10-12

and crying with a great voice, saying, 'The salvation is to Him who is sitting upon the throne -- to our God, and to the Lamb!'

Revelation 14:2-3

and I heard a voice out of the heaven, as a voice of many waters, and as a voice of great thunder, and a voice I heard of harpers harping with their harps,

Revelation 19:4

And fall down did the elders -- the twenty and four -- and the four living creatures, and they did bow before God who is sitting upon the throne, saying, 'Amen, Alleluia.'

Treasury of Scripture Knowledge

Summary

And when he had taken the book, the four beasts and four and twenty elders fell down before the Lamb, having every one of them harps, and golden vials full of odours, which are the prayers of saints.

Bible References

The four

Revelation 5:14
and the four living creatures said, 'Amen!' and the twenty-four elders fell down and they bow before Him who is living to the ages of the ages.
Revelation 4:4
And around the throne are thrones twenty and four, and upon the thrones I saw the twenty and four elders sitting, clothed in white garments, and they had upon their heads crowns of gold;
Revelation 7:10
and crying with a great voice, saying, 'The salvation is to Him who is sitting upon the throne -- to our God, and to the Lamb!'
Revelation 19:4
And fall down did the elders -- the twenty and four -- and the four living creatures, and they did bow before God who is sitting upon the throne, saying, 'Amen, Alleluia.'
John 5:23
that all may honour the Son according as they honour the Father; he who is not honouring the Son, doth not honour the Father who sent him.
Romans 14:10
And thou, why dost thou judge thy brother? or again, thou, why dost thou set at nought thy brother? for we shall all stand at the tribunal of the Christ;
Philippians 2:9
wherefore, also, God did highly exalt him, and gave to him a name that is above every name,
Hebrews 1:6
and when again He may bring in the first-born to the world, He saith, 'And let them bow before him -- all messengers of God;'

Having

Revelation 14:2
and I heard a voice out of the heaven, as a voice of many waters, and as a voice of great thunder, and a voice I heard of harpers harping with their harps,
Revelation 15:2
and I saw as a sea of glass mingled with fire, and those who do gain the victory over the beast, and his image, and his mark, and the number of his name, standing by the sea of the glass, having harps of God,
Psalm 33:2
Give ye thanks to Jehovah with a harp, With psaltery of ten strings sing praise to Him,
Psalm 43:4
And I go in unto the altar of God, Unto God, the joy of my rejoicing. And I thank Thee with a harp, O God, my God.
Psalm 81:2
Lift up a song, and give out a timbrel, A pleasant harp with psaltery.
Psalm 150:3
Praise Him with blowing of trumpet, Praise Him with psaltery and harp.

Golden

Revelation 15:7
and one of the four living creatures did give to the seven messengers seven golden vials, full of the wrath of God, who is living to the ages of the ages;

The prayers

Revelation 8:3
and another messenger did come, and he stood at the altar, having a golden censer, and there was given to him much perfume, that he may give it to the prayers of all the saints upon the golden altar that is before the throne,
Psalm 141:2
My prayer is prepared -- incense before Thee, The lifting up of my hands -- the evening present.

General references

Psalm 98:5
Sing to Jehovah with harp, With harp, and voice of praise,
Psalm 118:3
I pray you, let the house of Aaron say, That, to the age is His kindness.
Psalm 147:7
Answer ye to Jehovah with thanksgiving, Sing ye to our God with a harp.
Revelation 11:16
and the twenty and four elders, who before God are sitting upon their thrones, did fall upon their faces, and did bow before God,