There are many different variations of consecration vows, but the fundamental principle remains the same—they all require participants to surrender something sacred in exchange for a spiritually binding agreement that conflicts with the truth found in Sacred Scripture.
Some consecration vows promise salvation, others offer protection from end-time chastisements, while others require Catholics to sell their souls to the Immaculata in exchange for the forgiveness of their sins.
For more information on why Catholics should not sell their souls to the Immaculata, please review the following articles: