"Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." (Is 1:18)
Thus you would agree God hates the elect until they are justified.
If the elect are never in sin, What are they saved from. Calvinist doctrine does not teach that the elect have never been outside of redemption. From our perspective in time, their was a time we are all lost. Despite being elect. We cannot claim the status of God's child until justification. .... and the process of salvation is not totally complete until glorification.
Thus you would agree God hates the elect until they are justified.