2 He did what was pleasing to Hashem, but not with a whole heart.
va-YA-as ha-ya-SHAR b’-ay-NAY a-do-NAI RAK LO b’-lay-VAV sha-LAYM
ב וַיַּעַשׂ הַיָּשָׁר בְּעֵינֵי יְהֹוָה רַק לֹא בְּלֵבָב שָׁלֵם׃
25:2 But not with a whole heart
Why is Amatzya hesitant in his service of Hashem? Perhaps he had learned idolatry as a child in his father’s house. However, he notices that his father, like idolatrous kings before him, was struck down and reaches the conclusion that the worship of the one true God is the safest and most pragmatic course of action. However, when Amatzya obeys Hashem’s command and sends away his northern mercenaries, they sack his cities in disgust (verse 13). As such, he wonders if his original conclusion was wrong, and perhaps idolatry is the best course after all. We learn from here that it is not enough to serve God out of a desire for advancement. Worship of Hashem must be performed “with a whole heart.”