The word "this" refers to the kinds of worldly trouble that married people might have. Alternate translation: "I want to help you not to have worldly trouble" (See: [[rc://en/ta/man/translate/figs-explicit]])
This is probably a synecdoche for anyone who has never married. See how you translated "virgins" in [verse 25](./25.md). Alternate translation: "someone who has never married" (See: [[rc://en/ta/man/translate/figs-synecdoche]])