With these words we lift our heads above our individual struggles and come in imagination to the Temple. 'All the earth is invited (v 1) You are probably reading this alone at home but imagine yourself coming in a great joyful crowd. You are probably reading silently, but in imagination shout and sing (vs 1,2) This is exuberant joyful worship.
Our God revealed himself to Moses not only as 'just and right', as we noted in Psalm 99 but also as one whose love and faithfulness endure for ever (v 5). The two words, love and faithfulness are often found in the Old Testament in conjunction with the words 'justice' and 'righteousness'.
We do not constantly need to worry about losing God's affection. His love is constant and faithful. It is covenant love. When we sin and repent God forgives. Maybe human relationships have scarred us. Come to your heavenly Father and learn what love can be.