Hebrews 9:15-17

15Therefore he is athe mediator of a new covenant, so that bthose who are called may creceive the promised eternal inheritance, dsince a death has occurred that redeems them from the transgressions committed under the first covenant.
The Greek word means both  covenant and will; also verses 16, 17
16For where a will is involved, the death of the one who made it must be established. 17For fa will takes effect only at death, since it is not in force as long as the one who made it is alive.
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