Hebrews 10 is speaking of animal sacrifices in verse 26.
HEBREWS 10:26-31
[26],
(1-2)
FOR IF WE SIN WILLFULLY AFTER THAT WE HAVE RECEIVED THE KNOWLEDGE OF THE TRUTH THERE REMAINS NO MORE SACRIFICE FOR SINS,
[27], (3) BUT A CERTAIN FEARFUL LOOKING FOR OF JUDGMENT AND FIERY INDIGNATION, WHICH SHALL DEVOUR THE ADVERSARIES.
[28], He that despised Moses' law died without mercy under two or three witnesses:
[29],
(4) OF HOW MUCH SORER PUNISHMENT SUPPOSE YOU SHALL HE BE THOUGHT WORTHY WHO HAS TRODDEN UNDER FOOT THE SON OF GOD AND HAS COUNTED THE BLOOD OF THE COVENANT AN UNHOLY THING AND HAS DONE DESPITE TO THE SPIRIT OF GRACE?
[30], For we know him that has said, Vengeance belongs to me, I will recompense, said the Lord. And again, The Lord shall judge his people.
[31], It is a fearful thing to fall into the hands of the living God.
[32], But call to remembrance the former days, in which, after you were illuminated, you endured a great fight of afflictions;
[33], Partly, whilst you were made a spectacle both by reproaches and afflictions; and partly, whilst you became companions of them that were so used.
[34], For you had compassion of me in my bonds, and took joyfully the spoiling of your goods, knowing in yourselves that you have in heaven a better and an enduring substance.
[35],
(5) CAST NOT AWAY THEREFORE YOUR CONFIDENCE, which has great recompense of reward.
[36],
(6) FOR YOU HAVE NEED OF PATIENCE, THAT, AFTER YOU HAVE DONE THE WILL OF GOD, YOU MIGHT RECEIVE THE PROMISE.
[37], For yet a little while, and he that shall come will come, and will not tarry. [38], Now the just shall live by faith:
(7) BUT IF ANY MAN DRAW BACK, MY SOUL SHALL HAVE NO PLEASURE IN HIM.
The following are taken from the above scriptures...
(1). WE (BELIEVERS) can return back to a life of known unrepentant sin; HEBREWS 10:26
(2). WE (BELIEVERS) being those who have received a knowledge of the truth; HEBREWS 10:26
(3). WE (BELIEVERS) will receive the judgments of God if we continue in sin and reject Gods’ Word; HEBREWS 10:27
(4). WE (BELIEVERS) by returning back to known unrepentant sin after we receive a knowledge of the truth we count the blood of the covenant an unholy thing and do despite to the Spirit of Grace; HEBREWS 10:29
(5). WE (BELIEVERS) are warned not to
CAST AWAY our confidence which has great reward; HEBREWS 10:35
(6). WE (BELIEVERS) receive God's promise after we do God's will; HEBREWS 10:36
(7). WE (BELIEVERS) are WARNED NOT TO DRAW BACK INTO UNBELIEF; HEBREWS 10:38
.................
All the above of course are Gods' Word which compliments what the writer of Hebrews has already written about believers departing the faith to return to a life of known unrepentant sin in Hebrews 6:4-8 as shown in
post # 92 linked teaching us that a believer can receive a knowledge of the truth of Gods' Word and choose to reject it and depart the faith rejecting a knowledge or the truth of Gods' Word in order to live in a life of known unrepentant sin.
Take Care.