Matthew 27:52

the earth quaked; the rocks split; the tombs were opened, and many bodies of the saints who had fallen asleep were raised.

1 Corinthians 15:20

But now, now, Christ is risen from the dead, the first-fruit of those who have fallen asleep.

1 Thessalonians 4:14

For if we really believe that Jesus died and rose again, so even so will God through Jesus bring with him those also who have fallen asleep.

John 5:25-29

"Solemnly I tell you that the hour is coming, and now is, when the dead shall hear the voice of the Son of God, and those who hear shall live.

Acts 7:60

Then he knelt down and cried aloud, "Lord, lay not this sin to their charge."

1 Corinthians 11:30

This is why many among you are feeble and sickly, and many sleep.

1 Corinthians 15:51

Lo, I tell you a secret truth. we shall not all be sleeping, but we shall be changed,

1 Thessalonians 5:10

He died for us, in order that whether we are keeping vigil in life or sleeping in death we may ever be living together with him.

Treasury of Scripture Knowledge

Summary

And the graves were opened; and many bodies of the saints which slept arose,

General references

Bible References

Many

John 5:25
"Solemnly I tell you that the hour is coming, and now is, when the dead shall hear the voice of the Son of God, and those who hear shall live.
1 Corinthians 15:20
But now, now, Christ is risen from the dead, the first-fruit of those who have fallen asleep.

Slept

1 Corinthians 11:30
This is why many among you are feeble and sickly, and many sleep.
1 Corinthians 15:51
Lo, I tell you a secret truth. we shall not all be sleeping, but we shall be changed,
1 Thessalonians 4:14
For if we really believe that Jesus died and rose again, so even so will God through Jesus bring with him those also who have fallen asleep.
1 Thessalonians 5:10
He died for us, in order that whether we are keeping vigil in life or sleeping in death we may ever be living together with him.

General references

Mark 15:38
And the curtain of the Sanctuary was torn in two from top to bottom.
Luke 19:40
"I tell you," he answered, "that if these should hold their peace, the very stones would cry out."