Hebrews 10:9

He then said, "Look, I have come to do what you want." [So], Christ takes away the first [i.e., the animal and grain sacrifices] in order to establish the second [i.e., the sacrifice of Himself].

Hebrews 10:7

Then I said, 'Look, I have come to do what you want, O God, [just as] it is written in the scroll of the book [about me].'"

Hebrews 7:18-19

For on one hand, the previous command [i.e., the law of Moses] was set aside because it was weak and useless,

Hebrews 8:7-13

For if that first Agreement had been faultless, then there would have been no need for a second one.

But when Christ became the Head Priest of the good things that have come, He entered the greater and more complete Tabernacle, not made by hand, that is, not part of this creation [i.e., heaven, See 8:2].

Hebrews 12:27-28

Now the words, "once more" indicate the removing of what can be shaken --- that is, the created universe --- so that those things which cannot be shaken will remain. [Note: These "things" have been variously interpreted to be eternal truth, the heavenly kingdom, the new heavens and earth, etc.].