COVENANT, noun [L, to come; a coming together; a meeting or agreement of minds.]
1. A mutual consent or agreement of two or more persons, to do or to forbear some act or thing; a contract; stipulation. A covenant is created by deed in writing, sealed and executed; or it may be implied in the contract.
2. A writing containing the terms of agreement or contract between parties; or the clause of agreement in a deed containing the covenant
3. In theology, the covenant of works, is that implied in the commands, prohibitions, and promises of God; the promise of God to man, that mans perfect obedience should entitle him to happiness. This do, and live; that do, and die.
The covenant of redemption, is the mutual agreement between the Father and Son, respecting the redemption of sinners by Christ.

The covenant of grace, is that by which God engages to bestow salvation on man, upon the condition that man shall believe in Christ and yield obedience to the terms of the gospel.

TEST'AMENT, noun [Latin testamentum, from testor, to make a will.]

1. A solemn authentic instrument in writing, by which a person declares his will as to the disposal of his estate and effects after his death. This is otherwise called a will. A testament to be valid, must be made when the testator is of sound mind, and it must be subscribed, witnessed and published in such manner as the law prescribes.

Revelation 11:19 And the temple of God was opened in heaven, and there was seen in his temple the ark of his testament: and there were lightnings, and voices, and thunderings, and an earthquake, and great hail.