So we don't have to believe He died for us and rose from the dead? How does receiving His work translate into us doing it?
Not in order to become saved. Belief comes after salvation, not before. Salvation is freely given to those
whom the Father chose for it. That's the point of Luke 1:77 - we're saved, and from that given knowledge/edified about salvation.
You didn't understand that verse?
This might clarify:
[Luk 1:79 KJV] 79 To give light to them that sit in darkness and [in] the shadow of death, to guide our feet into the way of peace.