The fruit of the righteous is a tree of life, and he who wins souls is wise
PROVERBS 11:30 NKJV

Why is it that saints do not die as soon as they are converted? Because God meant that they should be the means of the salvation of their brethren. You would not surely wish to go out of the world if there were a soul to be saved by you. If I could go to glory before I had converted all the souls allotted to me, I should not be happy. We do not wish to enter heaven until our work is done, for it would make us uneasy if there were one single soul left to be saved by our means.
Tarry then, Christian; there is a sinner to be saved from his sins, a rebel to be turned from the error of his ways, and perhaps that sinner is one of your relatives. Perhaps you are spared in this world because there is a wayward son of yours not yet saved, and God has designed to make you the favored instrument of bringing him to glory. It may be that you are kept here because one of your offspring, by your instrumentality, is yet to be saved. Tarry then for your son’s sake. I know how deeply you love him, and for his sake, surely, you are content to be left here a little while, counting it for the best that you may bring in your son to glory with you.

God, I desire to live my life in such a way that I lead others to You. May my love and devotion to You compel them to want to know You and accept Your glorious gift of eternal life. Amen.

Spurgeon, C. (2015). 3-minute devotions with charles spurgeon: inspiring devotions and prayers. Uhrichsville, OH: Barbour Books.