Matthew 7:14

But narrow is the gate and hard is the road that leads to life, and few are they that find it.

Acts 14:22

strengthening the hearts of the disciples and encouraging them to continue in the faith, and warning them that it is through enduring many hardships that we must get into the kingdom of God.

Matthew 16:24-25

Then Jesus said to His disciples: "If anyone wants to be my disciple, he must say 'No' to self, put his cross on his shoulders, and keep on following me.

Matthew 20:16

So those who are last now will be first then, and those first will be last."

Matthew 22:14

For many are invited, but few are selected."

Matthew 25:1-12

"Then the kingdom of heaven will be like ten bridesmaids who took their lamps and went out to meet the bridegroom.

Mark 8:34

Then He called the people to Him along with His disciples, and said to them, "If anyone wants to be my disciple, he must say, 'No' to self, put the cross on his shoulders, and keep on following me.

Luke 12:32

Stop being afraid, my little flock, for your Father has gladly chosen to give you the kingdom.

Luke 13:23-30

And someone asked Him, "Lord, are only a few to be saved?" And He said to them,

John 15:18-20

If the world continues to hate you, remember that it has first hated me.

John 16:2

Men will turn you out of their synagogues. Yes, indeed, the time is coming when anyone who kills you will think that he is rendering a religious service to God.

John 16:33

I have told you these things, that you through union with me may have peace. In the world you have trouble, but be courageous! I have conquered the world."

Romans 9:27-29

And Isaiah cries out about Israel, "Although the sons of Israel are as numberless as the sands of the sea, only a remnant of them will be saved,

Romans 9:32

Why? Because they did not try through faith but through what they could do. They have stumbled over the stone that causes people to stumble,

Romans 11:5-6

So it is at the present time; a remnant remains, in accordance with God's unmerited favor.

Romans 12:2

Stop living in accordance with the customs of this world, but by the new ideals that mold your minds continue to transform yourselves, so as to find and follow God's will; that is, what is good, well-pleasing to Him, and perfect.

Ephesians 2:2-3

in which you once lived in accordance with the spirit of this present world, and the mighty prince of the air, who is always at work in the disobedient, among whom all of us, we Jews as well as you heathen,

1 Thessalonians 3:2-5

and so I sent my brother Timothy, God's minister in the preaching of the good news of Christ, to strengthen and encourage you in your faith,

1 Peter 3:20-21

who had once been disobedient, while God's patience was awaiting in the days when Noah was preparing an ark, in which a few people-- eight, to be exact -- were brought safely through the water.

Treasury of Scripture Knowledge

Summary

Because strait is the gate, and narrow is the way, which leadeth unto life, and few there be that find it.

General references

Bible References

Because

Matthew 16:24
Then Jesus said to His disciples: "If anyone wants to be my disciple, he must say 'No' to self, put his cross on his shoulders, and keep on following me.
Mark 8:34
Then He called the people to Him along with His disciples, and said to them, "If anyone wants to be my disciple, he must say, 'No' to self, put the cross on his shoulders, and keep on following me.
John 15:18
If the world continues to hate you, remember that it has first hated me.
John 16:2
Men will turn you out of their synagogues. Yes, indeed, the time is coming when anyone who kills you will think that he is rendering a religious service to God.
Acts 14:22
strengthening the hearts of the disciples and encouraging them to continue in the faith, and warning them that it is through enduring many hardships that we must get into the kingdom of God.
1 Thessalonians 3:2
and so I sent my brother Timothy, God's minister in the preaching of the good news of Christ, to strengthen and encourage you in your faith,

General references

Matthew 22:14
For many are invited, but few are selected."
Romans 3:17
They do not know the way of peace.