Can I lose my salvation if I don't continue or endure?

What if we don’t continue in the faith? Will we lose our salvation? Passages that speak of the need to “continue” or “hold fast” are addressed to those who are not yet saved and still need to continue hearing and believing until they take in the whole message of the Gospel. At some point, if they do continue, each will be born again. Once saved, we can do nothing to maintain or sustain our salvation. Jesus has secured us forever.