Romans 8:31

What then should we conclude from this? [Just this]: If God is on our side, who can [successfully] oppose us?

Ephesians 6:10

Finally, be [spiritually] strong in the Lord and in His mighty power.

2 Timothy 2:1

So, may you, my son, be strengthened through the unearned favor that comes from [your fellowship with] Christ Jesus.

1 John 4:4

[But], you people are [followers] of God, little children [i.e., dear ones], and you have overcome them [i.e., these false teachers] because He who is in your lives [i.e., the Holy Spirit, See 3:24] is greater [i.e., more powerful] than he who is in [i.e., dominates] the world [i.e., Satan. See II Cor. 4:4].

Treasury of Scripture Knowledge

Summary

Be strong and courageous, be not afraid nor dismayed for the king of Assyria, nor for all the multitude that is with him: for there be more with us than with him:

Bible References

Strong

Ephesians 6:10
Finally, be [spiritually] strong in the Lord and in His mighty power.
2 Timothy 2:1
So, may you, my son, be strengthened through the unearned favor that comes from [your fellowship with] Christ Jesus.

For there

Romans 8:31
What then should we conclude from this? [Just this]: If God is on our side, who can [successfully] oppose us?
1 John 4:4
[But], you people are [followers] of God, little children [i.e., dear ones], and you have overcome them [i.e., these false teachers] because He who is in your lives [i.e., the Holy Spirit, See 3:24] is greater [i.e., more powerful] than he who is in [i.e., dominates] the world [i.e., Satan. See II Cor. 4:4].