Lord Jesus was never stupid preaching with parables , he did this for clearity and to show his knowledge and to make the people understand very well .
In most if the parables christ narrated in the bible he is always referring to it to the kingdom of his father .
The Lord Jesus knew everything on earth before he came to earth .
Through out his stay on earth his comparison of the worldly life was used to compare life in heaven .
He never used a parable which is not related to the heavenly life