Revelation 9:16

The number of the armies of the horsemen was two hundred million; I heard the number of them.

Revelation 7:4

And I heard the number of those who were sealed, one hundred and forty-four thousand sealed from every tribe of the sons of Israel:

Psalm 68:17

The chariots of God are myriads, thousands upon thousands;
The Lord is among them as at Sinai, in holiness.

Ezekiel 38:4

I will turn you about and put hooks into your jaws, and I will bring you out, and all your army, horses and horsemen, all of them splendidly attired, a great company with buckler and shield, all of them wielding swords;

Daniel 7:10

“A river of fire was flowing
And coming out from before Him;
Thousands upon thousands were attending Him,
And myriads upon myriads were standing before Him;
The court sat,
And the books were opened.

Ezekiel 23:6

who were clothed in purple, governors and officials, all of them desirable young men, horsemen riding on horses.

Daniel 11:40

“At the end time the king of the South will collide with him, and the king of the North will storm against him with chariots, with horsemen and with many ships; and he will enter countries, overflow them and pass through.

Revelation 5:11

Then I looked, and I heard the voice of many angels around the throne and the living creatures and the elders; and the number of them was myriads of myriads, and thousands of thousands,

Treasury of Scripture Knowledge

Summary

And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them.

I heard

Bible References

The number

Psalm 68:17
The chariots of God are myriads, thousands upon thousands;
The Lord is among them as at Sinai, in holiness.
Daniel 7:10
“A river of fire was flowing
And coming out from before Him;
Thousands upon thousands were attending Him,
And myriads upon myriads were standing before Him;
The court sat,
And the books were opened.

Horsemen

Ezekiel 23:6
who were clothed in purple, governors and officials, all of them desirable young men, horsemen riding on horses.
Ezekiel 38:4
I will turn you about and put hooks into your jaws, and I will bring you out, and all your army, horses and horsemen, all of them splendidly attired, a great company with buckler and shield, all of them wielding swords;
Daniel 11:40
“At the end time the king of the South will collide with him, and the king of the North will storm against him with chariots, with horsemen and with many ships; and he will enter countries, overflow them and pass through.

I heard

Revelation 7:4
And I heard the number of those who were sealed, one hundred and forty-four thousand sealed from every tribe of the sons of Israel: