Luke 13:24
And He said to them, "Strive to enter in through the narrow door; because many, I say to you, will seek to enter in, and will not be able.
Hebrews 4:11
Let us, therefore, give diligence to enter into that rest, that no one fall after the same example of unbelief.
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 1:5
and, even for this very reason, adding all diligence, in your faith supply virtue; and in virtue, knowledge;
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;