What does every sin deserve?

Answer

Every sin deserves God's wrath and curse, both in this life and that which is to come (; ).

Read the 2 proof texts (KJV)

Ephesians 5:6: Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
Psalm 11:6: Upon the wicked he shall rain snares, fire and brimstone, and an horrible tempest: [this shall be] the portion of their cup.