Who had made him swear by God; who had required and forced him to swear fealty and constant obedience to him by the true God, whom he had served, and whom he called upon to be a witness against him if he broke his oath. So his rebellion was aggravated with perjury, and horrid contempt of God. Compare Ezekiel 17:18. Hardened his heart, i.e. he added obstinacy and incorrigibleness to his sins.
Related Commentaries of 2 Chronicles 36:13
2 Chronicles 36:13
13 And he also rebelled against king Nebuchadnezzar, who had made him swear by God: but he stiffened his neck, and hardened his heart from turning unto the LORD God of Israel.