Gal.6.9  And let us not grow weary in well-doing, for in due season we shall reap, if we do not lose heart.
2Thess.3.13  Brethren, do not be weary in well-doing.
Heb.12.3  Consider him who endured from sinners such hostility against himself, so that you may not grow weary or fainthearted.
Rev.2.3  I know you are enduring patiently and bearing up for my name's sake, and you have not grown weary.