1 Corinthians 16:13

Be on the alert; stand firm in the faith; acquit yourselves like men; be strong.

Ephesians 6:10-19

In conclusion, strengthen yourselves in the Lord and in the power which His supreme might imparts.

Hebrews 12:4

In your struggle against sin you have not yet resisted so as to endanger your lives;

Revelation 21:8

But as for cowards and the unfaithful, and the polluted, and murderers, fornicators, and those who practise magic or worship idols, and all liars--the portion allotted to them shall be in the Lake which burns with fire and sulphur. This is the Second Death."

Treasury of Scripture Knowledge

Summary

Be ye therefore very courageous to keep and to do all that is written in the book of the law of Moses, that ye turn not aside therefrom to the right hand or to the left;

Bible References

Very

1 Corinthians 16:13
Be on the alert; stand firm in the faith; acquit yourselves like men; be strong.
Ephesians 6:10
In conclusion, strengthen yourselves in the Lord and in the power which His supreme might imparts.
Hebrews 12:4
In your struggle against sin you have not yet resisted so as to endanger your lives;
Revelation 21:8
But as for cowards and the unfaithful, and the polluted, and murderers, fornicators, and those who practise magic or worship idols, and all liars--the portion allotted to them shall be in the Lake which burns with fire and sulphur. This is the Second Death."