1 Corinthians 9:26

Therefore I run in such a way, as not without aim; I box in such a way, as not beating the air;

Matthew 11:12

From the days of John the Baptist until now the kingdom of heaven suffers violence, and violent men take it by force.

Luke 13:24

Strive to enter through the narrow door; for many, I tell you, will seek to enter and will not be able.

1 Corinthians 14:9

So also you, unless you utter by the tongue speech that is clear, how will it be known what is spoken? For you will be speaking into the air.

2 Corinthians 5:1

For we know that if the earthly tent which is our house is torn down, we have a building from God, a house not made with hands, eternal in the heavens.

2 Corinthians 5:8

we are of good courage, I say, and prefer rather to be absent from the body and to be at home with the Lord.

Ephesians 6:12

For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places.

Philippians 1:21

For to me, to live is Christ and to die is gain.

Colossians 1:29

For this purpose also I labor, striving according to His power, which mightily works within me.

2 Timothy 1:12

For this reason I also suffer these things, but I am not ashamed; for I know whom I have believed and I am convinced that He is able to guard what I have entrusted to Him until that day.

2 Timothy 2:5

Also if anyone competes as an athlete, he does not win the prize unless he competes according to the rules.

Hebrews 4:1

Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.

1 Peter 5:1

Therefore, I exhort the elders among you, as your fellow elder and witness of the sufferings of Christ, and a partaker also of the glory that is to be revealed,

2 Peter 1:10

Therefore, brethren, be all the more diligent to make certain about His calling and choosing you; for as long as you practice these things, you will never stumble;

Treasury of Scripture Knowledge

Summary

I therefore so run, not as uncertainly; so fight I, not as one that beateth the air:

General references

Bible References

Not

2 Corinthians 5:1
For we know that if the earthly tent which is our house is torn down, we have a building from God, a house not made with hands, eternal in the heavens.
Philippians 1:21
For to me, to live is Christ and to die is gain.
2 Timothy 1:12
For this reason I also suffer these things, but I am not ashamed; for I know whom I have believed and I am convinced that He is able to guard what I have entrusted to Him until that day.
2 Timothy 2:5
Also if anyone competes as an athlete, he does not win the prize unless he competes according to the rules.
Hebrews 4:1
Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.
1 Peter 5:1
Therefore, I exhort the elders among you, as your fellow elder and witness of the sufferings of Christ, and a partaker also of the glory that is to be revealed,
2 Peter 1:10
Therefore, brethren, be all the more diligent to make certain about His calling and choosing you; for as long as you practice these things, you will never stumble;

So

Matthew 11:12
From the days of John the Baptist until now the kingdom of heaven suffers violence, and violent men take it by force.
Luke 13:24
Strive to enter through the narrow door; for many, I tell you, will seek to enter and will not be able.
Ephesians 6:12
For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places.
Colossians 1:29
For this purpose also I labor, striving according to His power, which mightily works within me.

General references

2 Chronicles 14:12
So the Lord routed the Ethiopians before Asa and before Judah, and the Ethiopians fled.