At a crowded feast remembering God’s rescue, Jesus promises living water to anyone who believes in Him. His words recall Ezekiel’s river, which flows from the temple, freshens salt water, feeds fruitful trees and brings healing wherever it goes. This living water is the Holy Spirit. Because God now lives in believers by His Spirit, they are not saved merely to wait for heaven. They follow Jesus by bringing healing, justice and beauty into workplaces, schools, homes and neighbourhoods.