I’m guessing that you’d like a Jewish translation of the OT. If you want to find something online you can find the Old 1917 JPS (Jewish Publication Society) translation here. The Tanach with Rashi’s commentary is here, while the so-called Living Torah is here.
I was wondering if the Jews have 3 or 4 chapters in Malachi and if the last verse ended with
“Lo, I will send you Elijah, the prophet, Before the day of the Lord comes, The great and terrible day.”
In the Catholic version of the Bible chapter 23 have been added by the scribes, so that the collection of the 12 minor prophets will not end with the threat of doom.
I just find it interesting. I wondered if Catholics were the only ones who repeated this verse
Nope. That repeated ending is in fact found in the Masoretic Hebrew text (something which is omitted from many translatons), since after all no one likes to end things on a negative note. The Septuagint, meanwhile, transposes 3:22 (4:4): “Remember the law of Moses my servant…” at the end.
The Masoretes, Jewish scholars who preserved the Hebrew Bible during the Middle Ages, repeated verse 5 after verse 6, lest the book of the twelve minor prophets end on the harsh note of a curse. This attempt to soften the message does not alter the grim reality.
Everyman’s Bible Commentary: Haggai and Malachi by Herbert Wolf (1976)
Neither the Septuagint nor Hebrew liturgical tradition wished to end the Book of the Twelve Prophets with “curse,” and so the Septuagint puts verse 4 after verse 6, while Hebrew liturgies often repeated verse 5 after verse 6 — a practice followed in some versions of the Hebrew Bible.
Interpretation. A Bible Commentary for Teaching and Preaching: Nahum - Malachi by Elizabeth Rice Achtemeier (1986)
Verse 25 is not really part of the book of Malachi. It is a repetition of verse 23. Jewish tradition did not want to end the reading of the Haphtarah on the joyous day of Shabbat with a negative description of God destroying the world, so it so it repeats the favorable message of verse 23 when the prophecy is read in the synagogue.
Onkelos on the Torah: Understanding the Bible Text, Volume 3 by Israel Drazin, Stanley M. Wagner (2010)