God's love is unconditional.
But there is a hell.
God says: "I did not come to condemn the world...I judge no one".
But to the damned He says: "Depart from me, you accursed."
If we reject Him, He respects our free will - He cannot force us to love Him, though He gives us all He can, even Himself and the partaking in the divine nature, in order for us to chose Him, and He loves us first so that we may love Him.
But if we are unfaithful, He remains faithful, because it is written: "I have loved you of an everlasting love." So if we sin, He will not destroy us, but give us a time to repent and the necessary "auxiliating grace" for us to even be able to repent - "where sin abounds, grace abounds all the more", "in weakness my power is made perfect". If we repent, He is ready to forgive us. No, He goes after us. Who, having 99 sheep, leaves the flock to look for the one misbehaving sheep that ran unto darkness and danger? Is it not better by human logic to forget about that one and focus on the 99 remaining? But Christ goes looking for us in His faithfulness, He knocks at our door until we open, and He carries us back in loving kindness. "A penitent and contrite heart I will not refuse. I will not forsake you...behold. I have engraved you on the palms of my hands."
The Son of Man is "a sign of contradiction", never forget it ;)