Ephesians 2:8

For by grace ye have been saved through faith: and this, not of yourselves, it is the gift of God:

Colossians 1:11

strengthened with all power, according to the might of His glory, unto all patience and long-suffering with joy;

2 Timothy 4:17

The Lord stood by me, and strengthened me, that through me the proclamation might be fully announced, and that all the gentiles might hear; and I was delivered out of the mouth of a 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 power, according to the might of His glory, unto all patience and long-suffering with joy;
2 Timothy 4:17
The Lord stood by me, and strengthened me, that through me the proclamation might be fully announced, and that all the gentiles might hear; and I was delivered out of the mouth of a lion.