Partnering with our community to achieve food, housing, and employment stability for neighbors in need. Partnering with our community to achieve stability for our neighbors in need. Do you need assistanc Arm In Arm (formerly The Crisis Ministry of Mercer County) was founded in 1980 by the leaders of Nassau Presbyterian Church and Trinity Church as a grassroots, community response to the economic recession of the time. Our mission is “Partnering with the community to achieve stability for our neighbors in need." We serve low-income individuals and families in every Mercer County municipality through Housing Stability and Homelessness Prevention, Hunger Prevention and Nutrition Education, and Employment Readiness including Driver's License Assistance.