"It was not for his own sin that the Father bruised the Son. It was because he wanted to show us mercy. He wanted to forgive and heal and save and rejoice over us with loud singing. But he is righteous. That means his heart was filled with a love for the infinite worth of his own glory. But we were sinners. And that means that our hearts were filled with God-belittling affections. So to save sinners, and at the same time magnify the worth of his glory, God lays our sin on Jesus and abandons him to the shame and slaughter of the cross."
- John Piper, The Pleasures of God
And he took it on himself gladly, in order to save such wretched sinners as ourselves. There is much reason to rejoice, when we consider what has been done for us, and where we would be without it.
"This is the day which the Lord hath made; we will rejoice and be glad in it."