Are you afraid of God’s justice? If you do this, you don't have to be. 

Turn to any page of St. Faustina's Diary, and you'll find spiritual gems. Like this one:

Souls who spread the honor of My mercy I shield through their entire lives as a tender mother her infant, and at the hour of death I will not be a Judge for them, but the Merciful Savior. At that last hour, a soul has nothing with which to defend itself except My mercy. Happy is the soul that during its lifetime 
immersed itself in the Fountain of Mercy, because justice will have no hold on it. (Diary, 1075)