2 Corinthians 4:1

So since by the mercy of God I am engaged in this service, I never lose heart.

2 Corinthians 4:16

So I never lose heart. Though my outer nature is wasting away, my inner is being renewed every day.

Hebrews 12:3

Think of the opposition that he encountered from those sinners against themselves, if you would not grow weary and faint-hearted.

Hebrews 12:5

and you have forgotten the challenge addressed to you as God's sons, "My son, do not think lightly of the Lord's discipline, Or give up when he corrects you.

Treasury of Scripture Knowledge

Summary

But now it is come upon thee, and thou faintest; it toucheth thee, and thou art troubled.

Bible References

Thou faintest

2 Corinthians 4:1
So since by the mercy of God I am engaged in this service, I never lose heart.
Hebrews 12:3
Think of the opposition that he encountered from those sinners against themselves, if you would not grow weary and faint-hearted.