'Volunteer' in the Bible

When the leaders lead in Israel,when the people volunteer,praise the Lord.

the gold for the gold work and the silver for the silver, for all the work to be done by the craftsmen. Now who will volunteer to consecrate himself to the Lord today?”

next to him, Amasiah son of Zichri, the volunteer of the Lord, and 200,000 brave warriors with him;

Your people will volunteeron Your day of battle.In holy splendor, from the womb of the dawn,the dew of Your youth belongs to You.