First, I have to say, that knowing and being aware as to why Jesus spoke in parables only points us to the truth that the mysteries of the kingdom of heaven was not for all men.
In my reading of the said parable, it isn’t about really the matter of one getting save or not, but about bearing fruit in the kingdom of heaven.
And bearing fruit does not get anybody saved. It is post salvation.
Speaking of parables, perhaps this will shed some additional light. Read the parable of the wheat and the tares and the explanation of Jesus (Mt.13).
Tong
R2825
"The kingdom of heaven was not for all men."
But yet Jesus said "it is my Father's will that all men be saved."
That's some messed up stuff you're teaching Tong!