The sum you are insured for remains constant throughout
the insurance period.
Under level cover, regardless of when you might die or become
critically ill whilst the policy is in force, the sum paid out would be
the same as the sum you initially insured yourself for on day one.
The other very common form of life insurance is Life Insurance with decreasing cover. This type of insurance has a number
of uses but is primarily used to insure a Repayment Mortgage.