It goes without saying that the quality of the agricultural produce of the land depends very much on the weather.
Yet another fundamental factor is also the stability of the land, i.e. the political and social condition of the people living on that land.
If there were wars and bloodshed and unrest, would we expect the land to bear quality produce even if the land was fertile?
And if grapes were planted during a time of turmoil and distress, what will be harvested could be sour grapes that are neither edible nor used for wine making.
In the 1st reading, the planting and the harvesting of grapes was in the background of a land that was restored and the people were at peace.
Yet, it must be remembered that the rich harvest of grapes, the sweet taste of wine and the joy it brings to a people at peace was the work of God who restored the land and blessed the people.
In the gospel, Jesus also talked about wine and wineskins, and He said that no one puts new wine into old wineskins.
It may simply mean that the new wine of restoration and blessing cannot be put into the old wineskins of turmoil and distress that comes from unfaithfulness to the Lord.
By now we should know the dire consequences of being complacent and being unfaithful to the Lord.
Yet, as much as the Lord is merciful and restores us and blesses us so that we can have peace in our lives, may we also prepare new wineskins for our hearts so as to receive and treasure God's blessings.