Hebrews 11:6

but without faith it is impossible to please Him, for anyone who approaches God must believe that there is a God and that He gives rewards to all who earnestly try to find Him.

Hebrews 4:6

Since then it still remains that some are being admitted to it and that those who first had the good news told to them were not admitted because of disobedience,

Hebrews 3:18-19

To whom did He take oath that they should not be admitted to His rest, if it was not to those who disobeyed Him?

Matthew 5:12

Keep on rejoicing and leaping for ecstasy, for your reward will be rich in heaven; for this is the way they persecuted the prophets who lived before you.

Matthew 6:1-2

"Take care not to do your good deeds in public, to attract the attention of people; if you do, you will get no reward from your Father in heaven.

Matthew 6:5

"Also, whenever you pray, you must not be like the hypocrites, for they love to pray standing in the synagogues and on the street corners, to attract the attention of people. I solemnly say to you, they already have their reward.

Matthew 6:16

"Also whenever you fast, you must not look gloomy like the hypocrites, for they put on a gloomy countenance, to let people see them fasting. I solemnly say to you, they already have their reward.

Matthew 6:33

But as your first duty keep on looking for His standard of doing right, and for His will, and then all these things will be yours besides.

Matthew 10:41-42

Whoever welcomes a prophet as a prophet will receive the same reward as a prophet, and whoever welcomes an upright man as such will receive the same reward as the upright man.

Mark 16:17

And the following signs will attend those who believe: By using my name they will drive out demons; they will speak in foreign languages;

Luke 6:35

But you must practice loving your enemies, doing good to them, and lending to them, despairing of nothing; so that your reward will be great, and you will be sons of the Most High, because He is kind to the ungrateful and wicked.

Luke 12:31

But continue to seek His will, and these things will be yours besides.

John 3:18-19

Whoever trusts in Him is never to come up for judgment, but whoever does not trust in Him has already received his sentence, because he has not trusted in the name of God's only Son.

John 8:24

So I have told you that you would die under the curse of your sins, for unless you believe that I am the Christ, you will die under the curse of your sins."

John 14:6

Jesus answered him, "I am the way and the truth and the life. No one can come to the Father except through me.

Romans 10:14

But how can people call upon One in whom they have not believed? And how can they believe in One about whom they have not heard? And how can people hear without someone to preach to them?

Galatians 5:6

For in union with Christ Jesus neither circumcision nor lack of it counts for anything; but only faith that is spurred on to action by love.

Hebrews 3:12

See to it, my brothers, that no wicked, unbelieving heart is found in any of you, as shown by your turning away from the ever-living God,

Hebrews 4:2

For we have had the good news told to us as well as they, but the message heard did them no good, because they were not by faith made one with those who heeded it.

Hebrews 7:19

for the law had never made anything perfect -- and so a better hope is brought to us, through which we have approach to God.

Hebrews 7:25

Therefore, because He Himself lives always to intercede for them always, He is able to save completely any and all who come to God through Him.

Hebrews 11:26

and thought the reproach endured for the Christ was greater wealth than all the treasures in Egypt, for he kept his eye upon the reward.

2 Peter 1:5

Now for this very reason you must do your level best to supplement your faith with moral character, moral character with knowledge,

2 Peter 1:10

Therefore, brothers, be all the more in earnest to make certain to yourselves God's call and choice of you. For if you cultivate these qualities, you will never slip,

2 Peter 3:14

Therefore, dearly beloved, since you are expecting this, be in earnest to be found by Him without a blot, without reproach, and at peace.

Revelation 21:8

But the cowards, the unfaithful, the polluted, the murderers, the sexually immoral, the practicers of magic, the worshipers of idols, and all liars will have their portion in the lake that keeps on burning with fire and brimstone. This is the second death."

Treasury of Scripture Knowledge

Summary

But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.

Bible References

Without

Hebrews 3:12
See to it, my brothers, that no wicked, unbelieving heart is found in any of you, as shown by your turning away from the ever-living God,
Hebrews 4:2
For we have had the good news told to us as well as they, but the message heard did them no good, because they were not by faith made one with those who heeded it.
Mark 16:17
And the following signs will attend those who believe: By using my name they will drive out demons; they will speak in foreign languages;
John 3:18
Whoever trusts in Him is never to come up for judgment, but whoever does not trust in Him has already received his sentence, because he has not trusted in the name of God's only Son.
John 8:24
So I have told you that you would die under the curse of your sins, for unless you believe that I am the Christ, you will die under the curse of your sins."
Galatians 5:6
For in union with Christ Jesus neither circumcision nor lack of it counts for anything; but only faith that is spurred on to action by love.
Revelation 21:8
But the cowards, the unfaithful, the polluted, the murderers, the sexually immoral, the practicers of magic, the worshipers of idols, and all liars will have their portion in the lake that keeps on burning with fire and brimstone. This is the second death."

He that

Hebrews 7:25
Therefore, because He Himself lives always to intercede for them always, He is able to save completely any and all who come to God through Him.
John 14:6
Jesus answered him, "I am the way and the truth and the life. No one can come to the Father except through me.

Must

Romans 10:14
But how can people call upon One in whom they have not believed? And how can they believe in One about whom they have not heard? And how can people hear without someone to preach to them?

A rewarder

Hebrews 11:26
and thought the reproach endured for the Christ was greater wealth than all the treasures in Egypt, for he kept his eye upon the reward.
Matthew 5:12
Keep on rejoicing and leaping for ecstasy, for your reward will be rich in heaven; for this is the way they persecuted the prophets who lived before you.
Matthew 6:1
"Take care not to do your good deeds in public, to attract the attention of people; if you do, you will get no reward from your Father in heaven.
Matthew 10:41
Whoever welcomes a prophet as a prophet will receive the same reward as a prophet, and whoever welcomes an upright man as such will receive the same reward as the upright man.
Luke 6:35
But you must practice loving your enemies, doing good to them, and lending to them, despairing of nothing; so that your reward will be great, and you will be sons of the Most High, because He is kind to the ungrateful and wicked.

Diligently

Matthew 6:33
But as your first duty keep on looking for His standard of doing right, and for His will, and then all these things will be yours besides.
Luke 12:31
But continue to seek His will, and these things will be yours besides.
2 Peter 1:5
Now for this very reason you must do your level best to supplement your faith with moral character, moral character with knowledge,
2 Peter 3:14
Therefore, dearly beloved, since you are expecting this, be in earnest to be found by Him without a blot, without reproach, and at peace.