And.....?
and, whereas John 3 sez, believe and you will be saved, John 14 sex that following the will of God is essential to “belief”. the other parts echo Pauls “ i run the race to the end”, “persevere”, or as Jesus said, “keep the commandments”.
Under “once saved, always saved”, you don’t believe that any action on your part can lose your salvation, which is not Biblical in any way. There is an efficacy for good works, just as there is a punishment for sin.