Matthew 27:52

the tombs also were opened, and many bodies of the saints who had fallen asleep were raised,

1 Corinthians 15:20

But Christ has indeed been raised from the dead, the first fruits of those who have fallen asleep.

1 Thessalonians 4:14

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

John 5:25-29

Truly, truly, I say to you, the hour is coming, and now is, when the dead will hear the voice of the Son of God; and those who hear will live.

Acts 7:60

Then he fell on his knees and cried out with a loud voice, "Lord, do not hold this sin against them." And when he had said this, he fell asleep.

1 Corinthians 11:30

That is why many among you are weak and sick, and a number of you have fallen asleep.

1 Corinthians 15:51

Behold, I tell you a mystery; we will not all sleep, but we will all be changed,

1 Thessalonians 5:10

who died for us, so that whether we are awake or asleep, we will live 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
Truly, truly, I say to you, the hour is coming, and now is, when the dead will hear the voice of the Son of God; and those who hear will live.
1 Corinthians 15:20
But Christ has indeed been raised from the dead, the first fruits of those who have fallen asleep.

Slept

1 Corinthians 11:30
That is why many among you are weak and sick, and a number of you have fallen asleep.
1 Corinthians 15:51
Behold, I tell you a mystery; we will not all sleep, but we will all be changed,
1 Thessalonians 4:14
For if we believe that Jesus died and rose again, even so God will bring with him those who have fallen asleep in Jesus.
1 Thessalonians 5:10
who died for us, so that whether we are awake or asleep, we will live together with him.

General references

Mark 15:38
Then the veil of the temple was torn in two from top to bottom.
Luke 19:40
He answered, "I tell you, if these keep silent, the stones would cry out."