'Willing' in the Bible

Yet the Lord was not willing to destroy the house of David because of the covenant which He had made with David, and since He had promised to give a lamp to him and his sons forever.

Then Hezekiah said, “Now that you have consecrated yourselves to the Lord, come near and bring sacrifices and thank offerings to the house of the Lord.” And the assembly brought sacrifices and thank offerings, and all those who were willing brought burnt offerings.