Ibriy (Hebrew)/Kasdiy (Chaldean)
The word "testament" does not appear in the Ibriy (Hebrew) portion of the King James Version of the Scriptures. A similar word, "covenant," does appear many times. This is what our Eloah, whose name is Yahuwah (yah-hoo-wah), made with people throughout scripture. The final "covenant" which we are under today is sealed with the blood of Yahushua. The Ibriy word is beriyth and it means a compact or contract.
In the Greek portion of the Scriptures, the word testament is rendered from diatheke, which means a disposition, or specifically, a contract. It is also rendered as covenant.
The legal disposition of ones' property by a written will. Either of the two principle sections of the Bible (incorrect definition)
A statement of belief
All of these modern meanings carry the same connotations that the Ibriy and Greek words carry, so they all mean basically the same thing as the renderings in the scriptures.
MattithYahuw (Matthew) 26:28 For this is My blood of the new testament that is shed for many for the remission of sins.
Markos (Mark) 14:24 And He said to them, "This is My blood of the new testament that is shed for many."
Loukas (Luke) 22:20 Likewise also the cup after supper, saying, "This cup is the new testament in My blood that is shed for you.
1 Korinthios (Corinthians) 11:25 After the same manner also he took the cup, when he had supped, saying, "This cup is the new testament in My blood. This you do, as often as you drink it, in remembrance of Me."
2 Korinthios 3:6 Who also has made us able ministers of the new testament, not of the letter, but of the spirit. For the letter kills but the spirit gives life.
2 Korinthios 3:14 But their minds were blinded. For until this day the same veil remains in place in the reading of the old testament which veil is done away in the Anointed.
Ibriym (Hebrews) 7:22 By so much was Yahushua made a surety of a better testament.
Ibriym 9:15 And for this cause He is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
Ibriym 9:16 For where a testament is there must also of necessity be the death of the testator.
Ibriym 9:17 For a testament is of force after men are dead, otherwise it is of no strength at all while the testator lives.
Ibriym 9:18 Whereupon neither the first testament was dedicated without blood.
Ibriym 9:20 Saying, "This is the blood of the testament which Yahuwah has enjoined to you."
Revelation 11:19 And the temple of Yahuwah was opened in the sky and there was seen in His temple the chest of His covenant and there were lightnings, and voices, and thunderings, and an earthquake, and great hail.
Notice the distinction of "old" testament from "new" testament. The old testament is not the writings from B'ereshiyth (Genesis) through Mal'akiy (Malachi), but is really the Law of Mosheh (Moses). The "Ten Commandments" are really the "Ten Words" and are separate from and given before the Law of Mosheh. All of the rest of the Ibriy scriptures are considered to be the Prophets and Writings, which include the Songs (Psalms). The New Testament Law is the Law of Grace, or as Yahushua explained it to the lawyers and Pharisees who were trying to entrap Him:
MattithYahuw 22:36-40 "Master, which is the great commandment in the law?" Yahushua said to him, "You shall love Yahuwah your Eloah with all your heart, and with all your soul, and with all your mind. This is the first and great commandment. And the second is like it. You shall love your neighbor as yourself. On these two commandments hang all the law and the prophets."
The Testaments of Yahuwah Defined