Hebrews 5:9-11

Amplified Bible

⁹ And having been made perfect [uniquely equipped and prepared as Savior and retaining His integrity amid opposition], He became the source of eternal salvation [an eternal inheritance] to all those who obey Him,^{(A) 10} being designated by God as High Priest according to the order of ^[a]Melchizedek.^(B)

¹¹ Concerning this we have much to say, and it is hard to explain, since you have become dull and sluggish in [your spiritual] hearing and disinclined to listen.