Don't limit this parable to conversion. This is what happens whenever the Word is preached.
It's not fair.
You are the object of His eternal love.
The Word is your Source of Life.
Some love while others despise the grace of God.
The Lord opens our eyes to see the glory of His cross.
Christ sows His Gospel through the Office of the Ministry.
Grace makes us all equal heirs of heaven.
God removes sin and its consequences by His forgiveness.
When Christ, the Word made flesh, dwells in your heart, you have life and produce an abundant harvest.