Sentence:  We <WSD>do</WSD> well to remind ourselves that from men and women of New England ancestry also issued the Church of Jesus Christ of Latter Day Saints , the Seventh Day Adventists , Christian Science , the American Board of Commissioners for Foreign Missions , the American Home Missionary Society , the American Bible Society , and New England theology . 
Meaning of the word marked with <WSD> tags:  act in one's own or everybody's best interest