John 6:27

Work not for the food that perishes, but for the food that abides unto eternal life, which the Son of Man will give to you; for Him God the Father sealed."

Hebrews 6:11-12

And we desire that each of you show forth the same diligence to the full assurance of the hope to the end;

2 Peter 1:10-11

Wherefore, brethren, give the more diligence to make your calling and election sure; for, if ye do these things, ye shall in nowise ever stumble;

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
Work not for the food that perishes, but for the food that abides unto eternal life, which the Son of Man will give to you; for Him God the Father sealed."
Hebrews 6:11
And we desire that each of you show forth the same diligence to the full assurance of the hope to the end;
2 Peter 1:10
Wherefore, brethren, give the more diligence to make your calling and election sure; for, if ye do these things, ye shall in nowise ever stumble;