“My hands have made both heaven and earth; they and everything in them are mine. I, the Lord, have spoken! ‘I will bless those who have humble and contrite hearts, who tremble at my word.'”
The Lord has always defined clearly those whom he approves and blesses. He is not interested in religious ritual, vv. 3. Trembling at his word means respect and obedience.
Fear for the Lord means fear for his word. The unrighteous are hostile toward those who uphold God’s word, Isa 66.5. People who diminish the word will be punished, v. 6.