Ephesians 2:8

For by grace ye are saved, through faith: and this not of yourselves; it is the gift of God: not by works, that no one may boast:

Colossians 1:11

strengthened with all might according to his glorious power, unto all patience and long-suffering with joy;

2 Timothy 4:17

But the Lord stood by me, and strengthened me; that by me the gospel might be fully spread, and that all the nations might hear: and so I was delivered out of the mouth of the lion.

Treasury of Scripture Knowledge

Summary

But the salvation of the righteous is of the LORD: he is their strength in the time of trouble.

Bible References

Strength

Colossians 1:11
strengthened with all might according to his glorious power, unto all patience and long-suffering with joy;
2 Timothy 4:17
But the Lord stood by me, and strengthened me; that by me the gospel might be fully spread, and that all the nations might hear: and so I was delivered out of the mouth of the lion.