"For God proved His love for us in that while we were yet sinners, Christ died for us!"
While we were yet sinners! While we were yet in darkness! While we yet knew Him! Its not that we realised we were sinners and pleaded for mercy that made Christ to die for us, no! While we were still languishing under the burden of sin, then God through Christ had compassion for us when He saw how heavily we laboured.
He loved us while we loved Him not.
The question is then, if He loved us such when we esteemed Him not, how much more when we come to the knowlegde of Him?
If He offered so great a sacrifice when we were yet sinners, how much more will he love us when we love Him back!?!