Sorry, but the illusion arises for me within your wording as though we are to put away responsibility, as well as all the various ways individuals are seen within the text who did not keep the actual faith. Make no mistake, they had the faith!
Unbelievers are reckoned as having "no faith" of God. Not little but none. The faith to believe God does not come from the imagination of ones heart.
A believer is reckoned as having little in respect to the faith of Christ that works in them but it is not again in respect to the imagination of one heart. But a faith that belongs to God needed to believe or exercise faith as a work . When man denies Christ because they are not trusting God .God denies them. But Christ cannot deny himself if he has begun the good work of salvation he will finished it and cause them to repent.
So it is for the many who retain a fictional understanding of both the loss of His power and the potential for us being enticed towards shipwrecking the faith we have. But don’t be misled, the surest foundation which Christ laid has not relieved us of our obligation for it to be somehow used as a metaphor,
I think a shipwreck faith is when men try to have the faith that comes from Christ in respect to their own self which is to blaspheme the holy name by which we are called heavenward.
The foundation which Christ laid has not relieved us of our obligation it provides the power to make the change as Christ in us our living hope. Our new faith is the free gift. It is not without the work of Christ's three day labor of love. But again is the faith that works in us to both will and perform His good pleasure .Why men would murmur and not rejoice is beyond my understanding? Possibly false pride?
Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling. For it is
God which worketh in you
both to
will and to
do of
his good pleasure.Do all things
without murmurings and disputings: Philippians 2:12-14