James 2:18-19

But someone will say, "you have faith; I have deeds." Show me your faith without deeds, and I will show you my faith by what I do. You believe that there is one God. Good! Even the demons believe that--and shudder.

Show me your faith without deeds
Romans 3:28 For we maintain that a man is justified by faith apart from observing the law.

and I will show you my faith
Read Hebrews 11

by what I do
Matthew 7:16-17 "By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles? Likewise every good tree bears good fruit, but a bad tree bears bad fruit."
James 3:13 Who is wise and understanding among you? Let him show it by his good life, by deeds done in the humility that comes from wisdom.

You believe that there is one God
Deuteronomy 6:4 Here, O Israel: The LORD our God, the LORD is one.
Mark 12:29 "The most important one," answered Jesus, "is this: 'Hear, O Israel, the Lord our God, the Lord is one.'"
1 Corinthians 8:4-6 So then, about eating food sacrificed to idols: We know that an idol is nothing at all in the world and that there is no God but one. For even if there are so-called gods, whether in heaven or on earth (as indeed there are many "gods" and many "lords"), yet for us there is but one God, the Father, from whom all things came and for whom we live; and there is but one Lord, Jesus Christ, through whom all things came and through whom we live.

Good! Even the demons believe that--and shudder
Matthew 8:29 "What do you want with us, Son of God?" they shouted. "Have you come here to torture us before the appointed time?"
Luke 4:34 "Ha! What do you want with us, Jesus of Nazareth? Have you come to destroy us? I know who you are--the Holy One of God!"

NOTES:
Read 1 Thessalonians 3

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.