This is a question Protestants often pose when they are doing evangelism, but it is a question which takes many people by surprise, including many Catholics. Some people are surprised because they never think about salvation, but Catholics tend to be surprised by it for a different reason.
Catholics tend to focus on salvation as a future event, something that has yet to happen.
But the question sounds very natural to Protestant ears because Evangelicals tend to conceive of salvation as a past event, something that happens to the believer at the very beginning of his life as a Christian. Since this passage speaks of salvation in the past tense, something that has been done to us, it is conceiving of salvation as a past reality. But this is only one aspect of salvation. Though now you do not see Him, yet believing, you rejoice with joy inexpressible and full of glory, receiving . . . These verses all speak of salvation in the future tense, as something that will happen to us in the future.