The work of righteousness will be peace, And the effect of righteousness, quietness and assurance forever. Isaiah 32:17
“The effect” Hebrew avodah [H5656] literally-service.
Used 44 times in the book Numbers alone, primarily to describe service toward God’s tabernacle performed by the Priests and Levites, as well as prohibition of all work on a Sabbath.
The derivation is from man’s original calling: to serve.
Avad [H5647] to serve. (21 times in Numbers)
And the Lord God took the man, and put him into the garden of Eden to dress it and to keep it. Genesis 2:15.
And after the Fall:
Therefore the Lord God sent him out of the garden of Eden to till the ground from which he was taken. Genesis 3:23.
This quickly devolved into servitude of man to man.
Twelve years they served Chedorlaomer, and in the thirteenth year they rebelled. Genesis 14:4.
Then He said to Abram: “Know certainly that your descendants will be strangers in a land that is not theirs, and will serve them, and they will afflict them four hundred years. Genesis 15:3.
And they made their lives bitter with hard bondage—in mortar, in brick, and in all manner of service in the field. All their service in which they made them serve was with rigor. Exodus 1:14.
This was to prepare them for a life of service to God.
So He said, “I will surely be with you. So that will be the sign to you that it is I who have sent you. When you have brought the people out of Egypt: you will serve God on this mountain.” Exodus 3:12.
We serve the Lord with the heart of a stranger and sojourner in this world.
Also you shall not oppress a stranger, for you know the heart of a stranger, because you were strangers in the land of Egypt. Exodus 23:9.
Hear my prayer, O Lord, and give ear unto my cry; hold not thy peace at my tears: for I am a stranger with thee, and a sojourner, as all my fathers were. Psalm 39:12.
These all died in faith without receiving the things promised—but they saw them and welcomed them from afar, and they confessed that they were strangers and sojourners on the earth. Hebrews 11:13.
You have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked mournfully before the Lord of hosts? And now we call the proud happy; yea, they that work wickedness are set up; yea, they that tempt God are even delivered. Then they that feared the Lord spoke often one to another: and the Lord hearkened, and heard it, and a book of memorial was written before him for them that feared the Lord, and that thought upon his name. And they shall be mine, saith the Lord of hosts, in that day when I make up my jewels; and I will spare them, as a man spares his own son that serves him. Then shall you return, and discern between the righteous and the wicked, between him that serves God and him that serves him not. Malachi 3:14-18.