The dial that controls his love for sinners is in his hands not ours. Moreover, it is set to the highest degree and his locked in place.
The temperature of his love for us does not vacillate. It does not rise or fall in accordance with our saintliness and sinfullness. The bloody wounds we opened in the body of Christ proved to us that there is nothing - nothing - we can do to extinguish his love for us or reduce it by even the slightest degree. That the evil baptism into which we immersed him while he was human, alive, tender, vulnerable and our guest upon the earth did not drain his heart of his love for us tells us in no uncertain terms that nothing can. His love for us is immune to our wickedness. His love for us is intransigent. It is independent.
Calvary was God's Declaration of Indepence. At Calvary, the Son of God proved that His love for us is independent of the evil we do to him.