* Worked to secure financial support for the war effort: Witherspoon was a member of the Committee of Finance, which was responsible for raising money to fund the Revolutionary War. He also worked to establish the Bank of North America, which provided financial assistance to the Continental Army.
* Encouraged Scots-Irish immigrants to join the war effort: Witherspoon was a prominent Presbyterian minister, and he used his influence to encourage Scots-Irish immigrants to join the Continental Army. He also helped to establish a school for the education of soldiers.
* Provided spiritual support to the troops: Witherspoon served as a chaplain to the Continental Army, and he provided spiritual support to the troops. He also wrote sermons and essays that helped to inspire and motivate the troops.