These are the ones that did not defile themselves with women; in fact, they are virgins. These are the ones that keep following the Lamb no matter where he goes. These were bought from among mankind as firstfruits to God and to the Lamb,

Revelation 14:1, 3-5.

 8. What indicated there would be a fewness of Kingdom sharers?

⁸ Ah, then, just one hundred and forty-four thousand were “bought from the earth,” “bought from among mankind as firstfruits to God and to the Lamb,” for a place on the governmental Mount Zion in the heavens.

Here let us remember that “firstfruits” of any harvest are not the whole crop, but are merely a small token selection from the whole crop.