John 4:24 God is spirit, and his worshippers must worship in spirit and truth.

2 Kings 19:19 Now, O Lord our God, deliver us from his hand, so that all kingdoms on earth may know that you alone, O Lord, are God.

2 Kings 20:2 Hezekiah turned his face to the wall and prayed to the Lord. "Remember, O Lord, how I have walked before you faithfully and with wholehearted devotion and have done what is good in your eyes." And Hezekiah wept bitterly.