Ezekiel 17:18 - Matthew Poole's English Annotations on the Holy Bible

This verse gives us the reason of this unhappy enterprise, which is summed up in wilful, presumptuous, and most unparalleled perjury. Zedekiah had given his hand; a solemn confirming of the oath, or covenant, and it implies the voluntary act of Zedekiah in swearing, which makes the perjury so much the fouler. All these things; too bad to be named, and most unbecoming any one that was a beneficiary, and had so much from the bounty of one that was not obliged to do any thing for him.