pronoun; possessive whose·so·ev·er; objective whom·so·ev·er.
Examples from the Web for whosoever
But I say onto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Whosoever knoweth the power of the dance, dwelleth in God.Challenging Religious Tradition for the Love of God — and the Love of Dance|Moral Courage|June 16, 2014|DAILY BEAST
And whosoever would not conform themselves to the ways of the Gentiles, should be put to death: then was misery to be seen.The Bible, Douay-Rheims Version|Various
Whosoever lives unmarried lives without joy, without comfort, without blessing.Curiosities of Superstition|W. H. Davenport Adams
My chapter says, "Whosoever shall do the commandments, and teach them, the same shall be called great in the kingdom of heaven."Fern's Hollow|Hesba Stretton
Whosoever marrieth her that is put away from her husband, commiteth adultery.The Queen of Hearts|Wilkie Collins
Whosoever he be of you that forsaketh not all that he hath, he cannot be my disciple.Added Upon|Nephi Anderson