The LORD is gracious and compassionate

Psalm 51:1(why compassionate? – to blot out our transgressions)

   Have mercy on me, O God, according to your unfailing love;
according to your great compassion blot out my transgressions.

Psalm 103:8(How God expresses His compassion? By being slow to anger and abounding in love)

   The LORD is compassionate and gracious, slow to anger, abounding in love.

Psalm 111:4(The LORD is gracious and compassionate)

   He has caused his wonders to be remembered; the LORD is gracious and compassionate.

Psalm 116:5(God is full of compassion)

   The LORD is gracious and righteous; our God is full of compassion.

Psalm 145:8(why compassionate? He is rich in love)

    The LORD is gracious and compassionate, slow to anger and rich in love.