John 6:27

Labour not so much for the meat that perisheth, but rather for that food which endureth unto life eternal, which the Son of man will give you: for Him hath God the Father sealed.

Hebrews 6:11-12

And we desire that every one of you would shew the same diligence to acquire the full assurance of hope even unto the end:

2 Peter 1:10-11

Wherefore, my brethren, be the more diligent thus to make your calling and election sure; for if ye do these things ye shall never fall.

Treasury of Scripture Knowledge

Summary

And they said, Arise, that we may go up against them: for we have seen the land, and, behold, it is very good: and are ye still? be not slothful to go, and to enter to possess the land.

Bible References

Be not

John 6:27
Labour not so much for the meat that perisheth, but rather for that food which endureth unto life eternal, which the Son of man will give you: for Him hath God the Father sealed.
Hebrews 6:11
And we desire that every one of you would shew the same diligence to acquire the full assurance of hope even unto the end:
2 Peter 1:10
Wherefore, my brethren, be the more diligent thus to make your calling and election sure; for if ye do these things ye shall never fall.