God. Hebrew. Elohim.(with Art.) = the [true] God. Figure of speech Asterismos, to emphasize the text or sermon of Jehoiada, which was the faithfulness of Jehovah to His word.
as = according as.
hath said. This is the great point. Compare 2Ch_6:16; 2Ch_7:18. 2Sa_7:12. 1Ki_2:4; 1Ki_9:5.