Matthew 10:34-39

Think not that I have come to send peace on the earth. I have not come to send peace, but a sword.

John 16:33

These things I have spoken to you, that in me you may have peace. In the world you shall have affliction, but be of good courage; I have overcome the world.

1 Corinthians 9:26-27

I, therefore, so run, not as with uncertainty; I so aim my blows, not as one that beats the air;

Ephesians 6:11-18

Put on the whole armor of God, that you may be able to stand firm against the wiles of the devil:

1 Timothy 6:12

Fight the good fight of the faith; lay hold on eternal life, to which you have been called, and for which you confessed the good confession before many witnesses.

2 Timothy 2:3

Do you, there fore, suffer evil, as a good soldier of Jesus Christ.

2 Timothy 4:7

I have fought the good fight, I have finished the race, I have kept the faith:

Treasury of Scripture Knowledge

Summary

Only that the generations of the children of Israel might know, to teach them war, at the least such as before knew nothing thereof;

Bible References

Might know

Matthew 10:34
Think not that I have come to send peace on the earth. I have not come to send peace, but a sword.
John 16:33
These things I have spoken to you, that in me you may have peace. In the world you shall have affliction, but be of good courage; I have overcome the world.
1 Corinthians 9:26
I, therefore, so run, not as with uncertainty; I so aim my blows, not as one that beats the air;
Ephesians 6:11
Put on the whole armor of God, that you may be able to stand firm against the wiles of the devil:
1 Timothy 6:12
Fight the good fight of the faith; lay hold on eternal life, to which you have been called, and for which you confessed the good confession before many witnesses.
2 Timothy 2:3
Do you, there fore, suffer evil, as a good soldier of Jesus Christ.
2 Timothy 4:7
I have fought the good fight, I have finished the race, I have kept the faith: