Your proving my point . You start with how salvation works and is appropriated . How we are justified, sanctified , predestinated, how we recieve the atonement, how we are glorified, how we recieve Jesus, how we recieve the Holy spirit . Then we can understand these so called loss of salvation passages. Legalists and the proud do this in reverse starting with passages that are not about salvation and use them as a basis to understand how we are saved . Or even more confusing, they try to blend the two like parallel lines and accept both as true and live as if both are true just in case .