Matthew 27:52

and the sepulchres were opened; and many bodies of saints, who slept, arose;

1 Corinthians 15:20

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

1 Thessalonians 4:14

For if we believe that Jesus died, and rose again, so also those that have fallen asleep for Jesus shall God bring with him.

John 5:25-29

Verily, verily, I say unto you, The hour is coming, yea, it is now, when the dead shall hear the voice of the Son of God: and they that hear shall live.

Acts 7:60

Then falling on his knees, he cried with a loud voice, Lord, impute not to them this sin! And thus speaking, fell asleep.

1 Corinthians 11:30

For this cause many are diseased and infirm among you, and some asleep [in death].

1 Corinthians 15:51

Behold, I shew you a mystery; we shall not indeed all sleep, but we shall all be changed,

1 Thessalonians 5:10

who died for us, that whether we sleep, or whether we wake, we may 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
Verily, verily, I say unto you, The hour is coming, yea, it is now, when the dead shall hear the voice of the Son of God: and they that hear shall live.
1 Corinthians 15:20
But now is Christ risen from the dead, and become the first-fruit of those who have fallen asleep.

Slept

1 Corinthians 11:30
For this cause many are diseased and infirm among you, and some asleep [in death].
1 Corinthians 15:51
Behold, I shew you a mystery; we shall not indeed all sleep, but we shall all be changed,
1 Thessalonians 4:14
For if we believe that Jesus died, and rose again, so also those that have fallen asleep for Jesus shall God bring with him.
1 Thessalonians 5:10
who died for us, that whether we sleep, or whether we wake, we may live together with him.

General references

Mark 15:38
And the vail of the temple was rent in two from the top to the bottom.
Luke 19:40
And he replying said to them. I tell you that, should these be silent, the very stones would cry out.