Our salvation is conditional. Jesus guarantees his offer to us. It is up to us to accept it. We have the hope of Paul; but if we do not persevere until the end, we will fall short and will fail.
The three parables in Matthew 25 are illuminating.
No one can come to Me unless the Father who sent Me draws him, and I will raise him up at the last day. John 6:44
The Greek word translated draw is helkuo which means to drag (literally or figuratively).
Helkuo: to draw, drag off http://www.searchgodsword.org/lex/grk/view.cgi?number=1670
The same word is used in other verses.
In John 21:6 where they are pulling a heavy net full of fish.
In John 8:10 where Peter is drawing his sword.
In Acts 16:19 where Paul and Silas being dragged into the marketplace before the rulers.
Was it up to the fish being dragged in, or the sword? How about Paul and Silas? Was it up to them? Knowing what the words mean is rather illuminating I would say.