You can make explicit the implicit information. AT: "For there are different reasons that men do not marry. For instance, there are men who were born eunuchs" (See: [[rc://en/ta/man/translate/figs-explicit]])
Possible meanings are 1) "men who have made themselves eunuchs by removing their private parts" or 2) "men who choose to remain unmarried and sexually pure." (See: [[rc://en/ta/man/translate/figs-metaphor]])
Here "kingdom of heaven" refers to God's rule as king. This phrase is found only in the book of Matthew. If possible, keep "heaven" in your translation. AT: "so they can better serve our God in heaven" (See: [[rc://en/ta/man/translate/figs-metonymy]])