Matthew 20:16

So, the [person who seems to be] last will be first [i.e., in importance and blessings], but the [person who seems to be] first will [end up] being last."

Matthew 19:30

But many will be last [i.e., in importance and blessings] who [seem to] be first, and those [who seem to be] first will [end up] being last."

Mark 10:31

But many that [appear to] be first [i.e., in importance and blessings] will [end up] being last. And [those appearing to] be last will [end up] being first."

Matthew 7:13

"You should enter [God's kingdom] by means of the narrow door, for the wide door and the broad road are the ones that lead to [spiritual and physical] destruction. And many people will enter [that wide door].

Matthew 8:11-12

And I [also] say to you, that many people will come from the east and the west and will sit down with Abraham, Isaac and Jacob in the kingdom of heaven.

Matthew 21:31

Which of these two sons did what his father wanted?" They answered, "The first one." Jesus said to them, "Truly I tell you, tax collectors and prostitutes [will] enter the kingdom of God ahead of you.

Matthew 22:14

For many people are called [by God] but [only those] few [who respond] are chosen [by Him]."

Luke 7:47

For this reason, I tell you, her many sins have been forgiven, for she has loved much. [Note: This suggests that her forgiveness was the result of her loving, but the point Jesus makes better fits the idea that her forgiveness produced love]. But the person who is forgiven of little [i.e., of only a few sins], loves [only] a little bit."

Luke 13:28-30

[Then] there will be crying and excruciating pain, when you will see Abraham, Isaac and Jacob and all the prophets in the kingdom of God and [you will see] yourselves thrown outside.

Luke 14:24

For I tell you, not one of those who were invited will [even] taste my supper."

Luke 15:7

I tell you that, in the same way, there will be more joy in heaven over one sinful person who repents [i.e., changes his heart and life], than over ninety-nine persons who do not need to repent.

Luke 17:17-18

Jesus asked [those standing nearby], "Were there not ten men [who were] healed? Where are the [other] nine?

John 12:19-22

So, the Pharisees were saying among themselves, "Look, you men are getting nowhere [in this situation]. See, the [whole] world has gone after him."

Romans 5:20

Now the law of Moses was introduced [into the world] in order to cause sin to increase [i.e., it defined many things to be wrong that were previously not regarded as sin]. But with the increase of sin, God's unearned favor increased all the more.

Romans 8:30

And [that class of] persons whom God [so] predetermined, He also called [through the Gospel. See II Thess. 2:14]. And those He called, He also made right with Himself. And those He made right with Himself, He also [determined to be] honored [i.e., in the future life].

Romans 9:30

What shall we say then? [Simply this]: That the Gentiles, who did not attempt to become right with God [by how they lived] were made right with God, and this was the result of their faith [in Christ].

1 Thessalonians 2:13

And because of this we also thank God continually that, when you people received the message of God, which you heard from us, you did not accept it as a message from [mere] human beings, but as it truly is, the message from God, which is at work in you believers.

2 Thessalonians 2:13-14

But we ought to thank God for you always, brothers [who are] dearly loved by the Lord, because God has chosen you from the beginning [Note: Some manuscripts use the Greek word for "firstfruits" instead of "beginning" here, but it is difficult to know in what sense the Thessalonian Christians were "first"], in order to be saved through being set apart by the Holy Spirit and through belief of the truth [of the Gospel].

James 1:23-25

For if anyone is [only] a listener to the word and does not practice it, he is like a person who sees his natural face in a mirror,

Treasury of Scripture Knowledge

Summary

So the last shall be first, and the first last: for many be called, but few chosen.

Bible References

The last

Matthew 8:11
And I [also] say to you, that many people will come from the east and the west and will sit down with Abraham, Isaac and Jacob in the kingdom of heaven.
Matthew 19:30
But many will be last [i.e., in importance and blessings] who [seem to] be first, and those [who seem to be] first will [end up] being last."
Matthew 21:31
Which of these two sons did what his father wanted?" They answered, "The first one." Jesus said to them, "Truly I tell you, tax collectors and prostitutes [will] enter the kingdom of God ahead of you.
Mark 10:31
But many that [appear to] be first [i.e., in importance and blessings] will [end up] being last. And [those appearing to] be last will [end up] being first."
Luke 7:47
For this reason, I tell you, her many sins have been forgiven, for she has loved much. [Note: This suggests that her forgiveness was the result of her loving, but the point Jesus makes better fits the idea that her forgiveness produced love]. But the person who is forgiven of little [i.e., of only a few sins], loves [only] a little bit."
Luke 13:28
[Then] there will be crying and excruciating pain, when you will see Abraham, Isaac and Jacob and all the prophets in the kingdom of God and [you will see] yourselves thrown outside.
Luke 15:7
I tell you that, in the same way, there will be more joy in heaven over one sinful person who repents [i.e., changes his heart and life], than over ninety-nine persons who do not need to repent.
Luke 17:17
Jesus asked [those standing nearby], "Were there not ten men [who were] healed? Where are the [other] nine?
John 12:19
So, the Pharisees were saying among themselves, "Look, you men are getting nowhere [in this situation]. See, the [whole] world has gone after him."
Romans 5:20
Now the law of Moses was introduced [into the world] in order to cause sin to increase [i.e., it defined many things to be wrong that were previously not regarded as sin]. But with the increase of sin, God's unearned favor increased all the more.
Romans 9:30
What shall we say then? [Simply this]: That the Gentiles, who did not attempt to become right with God [by how they lived] were made right with God, and this was the result of their faith [in Christ].

General references

Matthew 19:30
But many will be last [i.e., in importance and blessings] who [seem to] be first, and those [who seem to be] first will [end up] being last."
Matthew 22:14
For many people are called [by God] but [only those] few [who respond] are chosen [by Him]."
Mark 10:31
But many that [appear to] be first [i.e., in importance and blessings] will [end up] being last. And [those appearing to] be last will [end up] being first."
Luke 13:30
And certainly, those [who appear to be] last will be first [i.e., in importance and blessings], and those [who appear to be] first will [end up] being last."
Luke 15:31
And the father replied, 'Son, you are always [here] with me, and everything I have is yours.
John 4:30
[So], the people went out from the town and came to where Jesus was.