With the JW's, being saved means that if one link in your chain is too weak, the chain breaks and you're doomed.
So, your spiritual chain is as strong as it's weakest link, if we go by JW standards.
So, you could go to all meetings, in the field service, do all that they ask, but you do one little thing wrong, and you're doomed, just like a strong chain with one weak link to it. Then chain breaks, and you die at Armageddon.
This doesn't sound like the message of salvation Jesus preached back then.