to such an extent that

Best thing about an ordered read is the context of contrast you see. Case in point: 2King14 and 2Chron25. In both, the description of Amaziah revolves around the extent to which he served Him. In 2King, it has him doing right in the sight "yet not like David" only "to all that Joash his father had done". 2Chron has it described more succinctly as "yet not with a whole heart".

Both paint a clear picture of the OT version of the lukewarm. There's something here about levels of devotion which I won't touch today, but alluding to yesterday, Amaziah (and us) are no better approaching Him with one eye closed.