Thanks for this indepth elaboration of God's grace.
The greatest thing that motivate God to act in Grace towards us is the obedient and submission of Jesus Christ to our heavenly father and to death for the atornment for our sins and for His continous pleading on our behalf.
One other thing that motivate God to act in Grace on our behalf is because of His compassion towards us.
Romans 8:32 says "He that spared not his own Son, but delivered him up for us all, how shall he not with him also freely give us all things?"
He gave us His all because of His love and compassion towards us. He's still committed in acting in Grace on our behalf.
Thanks @hope777
Thank you @maintain4real-eu. You are coming from another angle, not about God's love first, but He acts in grace BECAUSE of Jesus Christ offer on the cross for us. If that offer was not brought on our behalf, He would have still been wrathful towards us, but because of that offer, He doesn't see our sin, but the righteousness of Jesus Christ. But in the end, you bring in His love and that is why He gave us His all, His only Son! Thank you for participating!