'Faint Not' in the Bible

Therefore, seeing we have this ministry, as we have received mercy, we faint not;

For which cause we faint not; but though our outward man is wasted, yet the inward man is renewed day by day.

And let us not be weary in well-doing: for in due season we shall reap, if we faint not.

Wherefore I desire that ye faint not at my tribulations for you, which is your glory.