Certainly “truth” would be another area for definition. But my faith in the Truth impels me to act. The same love of the Savior buzzes in me, and I cannot stand myself if I am not about Jesus’ business.
Parenthetically, I renounce the idea that I am trying to earn my salvation. I am saved because of Jesus’ work on the cross. Because of Jesus work on the cross, out of sublime gratitude and with joy, I work to alleviate others’ suffering.
And you? How do you define Christianity?