NET
13 He also rebelled against King Nebuchadnezzar, who had made him vow allegiance in the name of God. He was stubborn and obstinate, and refused to return to the Lord God of Israel.
Darby
13 And he also rebelled against king Nebuchadnezzar, who had made him take oath by God; and he stiffened his neck, and hardened his heart from returning to Jehovah the God of Israel.
KJV
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.