I have Protestant friends who say that Jesus died only for Christians. Is this true?
Jesus died for the redemption of all mankind. The apostle Paul says, “For to this end we toil and strive, because we have our hope set on the living God, who is the Savior of all men, especially of those who believe” (1 Tim. 4:10). God desires the salvation of all men (cf. 1 Tim. 2:3–4), thus he died to redeem mankind and offer salvation to all. His death redeemed mankind collectively, so we can say that even non-Christians are redeemed. Because each person has free will, he can choose to reject the salvation offered him as a gift. So, while all are redeemed, it is possible that not all will be saved. Christ’s death issufficient for the salvation of all, but it is efficient for the salvation of those who choose to accept that gift.