Hebrews 5:9

9And abeing made perfect, he became the source of eternal salvation to all who obey him,

Hebrews 9:12

12he bentered conce for all into the holy places, not by means of dthe blood of goats and calves but eby means of his own blood, fthus securing an eternal redemption.

Hebrews 9:15

15Therefore he is gthe mediator of a new covenant, so that hthose who are called may ireceive the promised eternal inheritance, jsince 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
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