Jesus Christ and GOD are the same so why did GOD come to dwell amongst HIS creations? In the broad sense, we all know that Jesus came to save mankind from sin. When Adam ate the forbidden fruit and disobeyed GOD, he basically unleashed sin or more accurately, the knowledge of sin. Once unleashed, sin corrupted our souls and has placed us all in a spiritually wrecked condition. Sin entered our nature and has become the standard in a world that has fallen in GOD's eyes. Because GOD is holy, righteous and supremely just, HE had to exact justice on us for our sinful ways and we know from the Bible, the wages of sin is death.
Now here's where GOD demonstrates HIS unconditional love for us. Being as how HE couldn't just ignore our sins, for that would be unjust, HE decided to pay for our sins HIMSELF. HE didn't send an angel or designate a man to settle our immense debt. HE transformed HIMSELF into mortal flesh in order to bear the suffering for our evil. The Word (Jesus and part of the Triune) became the flesh and flesh paid for our sins.
It gets even better. GOD didn't come to earth as a ruler or a king, HE came as an ordinary man to live amongst us and to show us how to rediscover the right way to live. The way to live that will see us reconnect with our CREATOR and finally find true peace and joy. A way of life that we once knew in the Garden of Eden but we lost through the unleashing of the knowledge of sin. Luke 19:10: “for the Son of Man has come to seek and to save that which was lost.”
It was more than within GOD's rights to eliminate us for such blatant disobedience and let's face it, pure evil that is mankind but GOD knows that we also have good in us and HE, being the absolute best of good and of pure love, wants us back. Matthew 20:28 “just as the Son of Man did not come to be served, but to serve, and to give His life a ransom for many.” The greatest service one can do is to give his own life for another. Why did Jesus come to earth? Because GOD chose to give HIS own life for all of us.