Good works

Truly good works are not self elected works of monastic or any other holiness, but such only as God has commanded, and as are comprehended within the bounds of one's particular calling, and all works, let their name be what it may, become good only when they flow from faith, the first, greatest, and noblest of good works." (John 6:29.) - "A treatise on good works by Martin Luther"

John 3:16 - For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.