To better understand the nature of what we commonly refer to as “salvation” (when we mean “new birth”, or “being born again”), I suggest we look at the entirety of what it entails.
Normally when we use the word salvation loosely in that sense, we refer to it as a “thing” rather than a transformative series of events changed 1) the essence of who we are, and 2) the covenant basis of how God relates to us.
To give you an example – we commonly use expressions like “losing salvation” to refer to the concept of a born-again believer the returning to his or her previous, unsaved, state of being. If we view a salvation as a thing, then we are justified to refer to that concept as “losing salvation”. An implication of this, then, is that salvation is a “thing” that we “found” (since we can “lose” it). Sort of like finding a penny – we find it, pick it up, put it in the pocket, the pocket has a hole, so we lose it.