G'day Mate. Not Australian but we love the country.
In response to your second post, and verses Luke 13:6-9 and Matthew 3:10 I believe that Christ was talking about His time to return. My Bible cross references to 2 Peter 3:9, which speaks of the Day of the Lords return.
[bible]2 Peter 3:9[/bible] And verse 15
[bible]2 Peter 3:15[/bible] Also just before these verses in Luke 12, Jesus also speaks about being ready for His return.
Without sounding too much like a calvinist, which I am not. God has elected certain people to become Christians, as evidenced in Romans 9, Matthew 11:27 and John 17 among other verses. Therefore there is a specific time that Christ will return, when all this is accomplished. I think the vine represents the "church" as it is the venue which Christ uses to reach the elect. The fruit is the Christians that are produced from the Church. When this job has been completed, Christ will return. Removing Christians and Himself from the world, and in so doing "chop down" the church, since Christ is the Head of the church and Christians are the body. When the land owner [God] sees the church is not producing fruit, he says cut it down. The gardener [Christ] says wait a little longer, give us one more chance.
Thank you for another chance to delve further into Gods word!