Hi Julius, like I was saying ,it's the direct context, within is historical application ,,,.the facts are he was speaking to the lost sheep of the house of Israel , not to the dogs,,, can I hear any woofs.brothers and sister ...
He was speaking to the lost sheep as as a whole so to speak some where arguable saved already baring fruit ,all ready pruned and cleaned ,and baring fruit ,some weren't ,we know one wasn't ......judus....
Depending on how some interpret scripture ,some say there were none saved till the spirt fell on the day of pentacost,,,,so that would delagate the preaching about the vine and branches to the lost unregenerate Jews ..
Some say that when Jesus breathed on the deciples and said receive the Holy Spirit just before pentacost, only then were they saved ,,,so that would also delagate the vine and branches sermon to the lost sheep who would be also unregenerate .......
So these two views of scripture only allow preaching of the vine and branches to the unregenerate,,,and it is a good argument , I might add ,one that deserves a fresh thread ,,,,tho I don't subscrib to those two views ,in which would be a reason interpret the above ,as if Jesus was speaking to the unsaved ,,,,,
My reasons would be the historical context and missions of Jesus to the lost sheep ,and his ,sovereign relationship to the line of Abraham ,and to corasponding prophecy found in the Old Testament ,that Jesus was using as a metaphor wile teaching the deeper truth of it ....
Now I'm sure you can stretch the application and apply it to those who hear the gospel ,,,,,,,as if God is the scorce of life and light ,and he lights every man that comes in to the world , he upholds Ol things by the word of his powers ,and in him do all things consist ,,he is vine and mankind is the branches ,any who don't bare fruit ,will be cast to hell ...
Or you can aply it the way you and frank are applying it ,which I think is contextual wrong ,but OK to do , since it lines up with other exhortation to press on and insure ,,,,,,,but personally there is enough verses already for that ,and also to teach Christians to get there strength form Christ and not the flesh ,as you said ,, so I am not obligated to use those same verses to teach an application as you mentioned ,,