Listen as Paul commends the church at Philippi:
"Wherefore my beloved, as ye have ALWAYS OBEYED, not as in my presence only, but now much more in my absence..."
Now, Listen as Paul exhorts them:
"...work out your own salvation with FEAR and trembling."
I believe it is the Fear of Falling that we are called here to maintain.
Listen now as Paul comforts the church:
"For it is God which worketh in you both to will and to do of His good pleasure."
It is such COMFORT to know the closeness of holy God in reference to sinful man as man fearfully and tremblingly work out their salvation through faith by grace and take use of the means of grace, hating and fleeing from sin and clinging to Christ Jesus. Glory! Let us likewise OBEY, FEAR, and take COMFORT.