Two Reasons to Praise God

Reason 1 for the doxology: The Goodness of God
Reason 2 for the doxology: The Greatness of God

This doxology show the goodness and the greatness of God. God has adopted you as his child through Jesus Christ. (His goodness) and he has the power to do what he has promised. (His greatness)

Brothers and sisters in Jesus Christ: Now suppose someone gave you instructions to clean the house – all the details – but doesn’t give you the key to go into the house, how helpful would those instructions be? No so much! Now the job is to clean his spiritual household, so God gave you 2 keys: His greatness, and his goodness. Are you using these keys? You have no ground whatsoever to fear any man, religion, or philosophy, regardless of how threatening they are. Be encouraged by these verses from Psalm 103.
2 Bless the LORD, O my soul, And forget not all His benefits: 3 Who forgives all your iniquities, Who heals all your diseases,4 Who redeems your life from destruction, Who crowns you with loving kindness and tender mercies, 10 He has not dealt with us according to our sins, Nor punished us according to our iniquities.11 For as the heavens are high above the earth, So great is His mercy toward those who fear Him;12 As far as the east is from the west, So far has He removed our transgressions from us. 20 Bless the LORD, you His angels, Who excel in strength, who do His word, Heeding the voice of His word. 21 Bless the LORD, all you His hosts, You ministers of His, who do His pleasure.