[Iscool]

It means that without the Holy Spirit, we are lost, and that human nature unaided by grace can do nothing.

The Holy spirit hadn't even been mentioned...In the entire Chapter...The Holy Spirit hadn't even shown up yet...

[Arthur McGowan]

You’re forgetting: Even though the Holy Spirit hasn’t been mentioned yet, SAINT JOHN KNEW ABOUT HIM ALREADY as he was writing the gospel.