testamental

noun

1. Obsolete a covenant, esp. one between God and man
2. 1. either of the two parts of the Christian Bible, the Old Testament and the New Testament
   2. Informal a copy of the New Testament
3. 1. a statement, act, etc. testifying to the fact, validity, or worth of something; testimonial: a testament to liberty
   2. an affirmation of beliefs or convictions; profession: a freethinker's testament
4. Law a will: now rare except in the phrase