If you have a friend who attempts to use Hebrews 8:13 to "prove" that Torah was "abolished at the cross," please tell them this:
Hebrews 8:13 says: In that he said a Renewed (Covenant), he made the first old; and that which is old and decaying, is near to disappearing. (AENT)
The context of Hebrews 8:13 is actually Jeremiah 31:31-34:
31 "Here, the days are coming," says ADONAI, "when I will make a new covenant with the house of Isra'el and with the house of Y'hudah. 32 It will not be like the covenant I made with their fathers on the day I took them by their hand and brought them out of the land of Egypt; because they, for their part, violated my covenant, even though I, for my part, was a husband to them," says ADONAI.
33 "For this is the covenant I will make with the house of Isra'el after those days," says ADONAI: "I will put my Torah within them and write it on their hearts; I will be their God, and they will be my people. 34 No longer will any of them teach his fellow community member or his brother, 'Know ADONAI'; for all will know me, from the least of them to the greatest; because I will forgive their wickednesses and remember their sins no more." (CJB)
Actually, YHWH’s Torah (Divine Instructions in Righteousness, without which we would have NO blueprint for moral, holy living) can NEVER disappear. Why would they?
Without Torah, Jesus would have had nothing to preach about; he would have taught nothing but "believe in God to be saved. No rules to follow, just do your own thing."
More importantly, without YHWH's Word/Torah/Divine Instructions that Christians believe were somehow made null and void because Jesus died, Yeshua wouldn't have existed at all. If you ignore "the Word" then you're ignoring Yeshua. After all, he was and still is "the Word" (John 1:1, 14) and the "Arm of YHWH" (Isaiah 53:1) ....
BOTTOM LINE: What Hebrews 8 refers to … what is “near to disappearing” ... is the sinful nature of man that breaks Torah, NOT the standard of Torah! Remember that WE broke Torah, not YHWH. YHWH did not drop the standard of Torah because Israel chose disobedience; rather, He installed a Renewed Covenant to write Torah upon the heart through the work of the Ruach haKodesh, according to Mashiyach.
The fact of the matter is that in Mashiyach, YHWH raised the bar; He magnified Torah. (See Isaiah 42:21 which says: “ADONAI was pleased, for his righteousness' sake, to make the Torah great and glorious.”)
Because mankind broke Covenant, YHWH requires complete renovation on our part, not YHWH’s part of the Covenant. Hebrews 8:13 in its twisted form, became one of the “crown jewels” of Torahless Christianity which teaches that Torah is decaying and is near to disappearing, but nothing could be farther from the truth. See 2 Peter 3:16.