The Justice and Mercy of God in Christ

The Belgic Confession:

Article 20: The Justice and Mercy of God in Christ

We believe that God-- who is perfectly merciful and also very just-- sent his Son to assume the nature in which the disobedience had been committed, in order to bear in it the punishment of sin by his most bitter passion and death.

So God made known his justice toward his Son, who was charged with our sin, and he poured out his goodness and mercy on us, who are guilty and worthy of damnation, giving to us his Son to die, by a most perfect love, and raising him to life for our justification, in order that by him we might have immortality and eternal life.

Source: http://www.reformed.org/documents/index.html