"Do good to those who hate you." Luke 6:27
What a command! How could it be expected of anyone? And who dares to require it? One who exemplifies it in the extreme.
God is the One who does good to those who hate him. He sent his own Son to die for sinners, while they were yet sinners -- "while we were enemies," as Paul says (Rom. 5:10). While we fought against the gospel with the viciousness of rabid dogs, the Holy Spirit did good to us by granting us to believe.
We were God's enemies and he did eternal good to us in the midst of our hatred. This is why we can turn right around and do good to those who hate us, to the glory of God.