Is the "new covenant" new or renewed?

You came by this reading honestly. The word "new" sits right there in the English, "a new covenant," and any plain reader takes it at face value. Nobody handed you a trick; they handed you the surface of the text, and you trusted it. That trust is reasonable.

And there is something genuinely true that the word is trying to protect. Something did happen. The covenant is described as not like the one before, the location of the Torah changes, the heart is involved in a way it was not before. You are right to feel that this is not nothing; it is a real turn in the story.

You may also have felt the friction, though, between a brand-new covenant and a Messiah who says He did not come to abolish but to fulfill, that not one stroke of the Torah will pass away (Matthew 5:17-18). If the covenant is new from scratch, why does He guard the old instruction so fiercely? That friction is honest. Sit with it.

But the frame that reads "new" as "replacement," God scrapping plan A for a different plan B, is not what the Hebrew carries. The word is chadashah, from the same root as chodesh, the new moon. The new moon is not a different moon. It is the same moon made fresh again, restored to fullness after waning. To read chadashah as "wholly other" is to miss the Hebrew under the English. Put the replacement reading down.

Here is what the text shows. Jeremiah 31 names the content of the renewed covenant directly: "I will put my Torah within them, and I will write it on their hearts" (Jeremiah 31:33). The same Torah. Not a new law, not a different standard, the very instruction that stood on stone, now relocated to the inside of a person. Ezekiel says the same: a new heart, His Ruach within, so that you walk in His statutes (Ezekiel 36:26-27). The content does not change; the location does. That is renewal, the same covenant love made fresh, exactly as His mercies are "new every morning" (Lamentations 3:23) without being a different mercy each day.

Do not take that from me. Read Jeremiah 31:31-33 slowly and underline what gets written on the heart. It is the Torah. Then ask the text its own question: if this were a replacement, why is the thing being renewed the very instruction it is said to abolish?