Questions of conscience are questions that a person asks because he wants to know if something is sinful or not. In this case, a person might ask if the food at the market was offered to idols; if he thinks that it is sinful to eat food sacrificed to idols, he would feel guilty about eating it. Alternate translation: "without asking questions that could make the conscience feel guilty" or "without asking questions about whether it is sinful to eat it" (See: [[rc://en/ta/man/translate/figs-explicit]])