Romans 5:3-5

And not only so, but let us also rejoice in tribulation; knowing that tribulation works out endurance;

Colossians 1:27

to whom God willed to make known what is the riches of the glory of this mystery among the Gentiles, who is Christ in you, the hope of glory:

Treasury of Scripture Knowledge

Summary

And thou shalt be secure, because there is hope; yea, thou shalt dig about thee, and thou shalt take thy rest in safety.

Bible References

Because

Romans 5:3
And not only so, but let us also rejoice in tribulation; knowing that tribulation works out endurance;
Colossians 1:27
to whom God willed to make known what is the riches of the glory of this mystery among the Gentiles, who is Christ in you, the hope of glory: