Matthew 19:30

But many will be last who are first; and first who are last.

Matthew 20:16

So the last will be first, and the first last."

Mark 10:31

But many who are first will be last; and the last first."

Luke 13:30

And note this, there are some who are last who will be first, and there are some who are first who will be last."

Matthew 21:31-32

Which of the two did the will of his father?" They said, "The first." Jesus said to them, "Truly I tell you that the tax collectors and the prostitutes are entering into the Kingdom of God before you.

Matthew 8:11-12

And I tell you that many will come from the east and the west, and will sit down with Abraham, and Isaac, and Jacob in the Kingdom of Heaven,

Luke 7:29-30

When all the people and the tax collectors heard this, they declared God to be just, having been baptized with John's baptism.

Luke 18:13-14

But the tax collector, standing far away, would not even lift up his eyes to heaven, but beat his breast, saying, 'God, be merciful to me, a sinner.'

Romans 5:20-21

The law came in besides, that the trespass might abound; but where sin abounded, grace abounded more exceedingly;

Romans 9:30-33

What shall we say then? That the Gentiles, who did not follow after righteousness, attained to righteousness, even the righteousness which is of faith;

Galatians 5:7

You were running well. Who interfered with you that you should not obey the truth?

Hebrews 4:1

Let us fear therefore, lest perhaps anyone of you should seem to have come short of a promise of entering into his rest.

Treasury of Scripture Knowledge

Summary

But many that are first shall be last; and the last shall be first.

Bible References

General references

Matthew 8:11
And I tell you that many will come from the east and the west, and will sit down with Abraham, and Isaac, and Jacob in the Kingdom of Heaven,
Matthew 20:16
So the last will be first, and the first last."
Matthew 21:31
Which of the two did the will of his father?" They said, "The first." Jesus said to them, "Truly I tell you that the tax collectors and the prostitutes are entering into the Kingdom of God before you.
Mark 10:31
But many who are first will be last; and the last first."
Luke 7:29
When all the people and the tax collectors heard this, they declared God to be just, having been baptized with John's baptism.
Luke 13:30
And note this, there are some who are last who will be first, and there are some who are first who will be last."
Luke 18:13
But the tax collector, standing far away, would not even lift up his eyes to heaven, but beat his breast, saying, 'God, be merciful to me, a sinner.'
Romans 5:20
The law came in besides, that the trespass might abound; but where sin abounded, grace abounded more exceedingly;
Romans 9:30
What shall we say then? That the Gentiles, who did not follow after righteousness, attained to righteousness, even the righteousness which is of faith;
Galatians 5:7
You were running well. Who interfered with you that you should not obey the truth?
Hebrews 4:1
Let us fear therefore, lest perhaps anyone of you should seem to have come short of a promise of entering into his rest.