Are Works the Evidence or the Energizer of Faith?

Questions about whether faith is the evidence or the energizer of faith, and biblical support for the idea that good works are inevitable and always demonstrated in the life of someone who has true faith.   Works appear to be the “engine oil” that keeps faith alive. Without them, faith is dead. Therefore, aren’t works the energizer of faith, not the evidence? Can you please provide biblical support that “good works” are inevitable and always demonstrated in the life of someone who has true faith?