is the spirit of jealousy a demon Numbers 5-14

is the spirit of jealousy a demon Numbers 5:14 Numbers 5:30 

Numbers 5:14 

English Standard Version

and if the spirit of jealousy comes over him and he is jealous of his wife who has defiled herself, or if the spirit of jealousy comes over him and he is jealous of his wife, though she has not defiled herself,

What do other translations say?

Amplified Bible

and if a spirit (sense, attitude) of jealousy comes over him and he is jealous and angry at his wife who has defiled herself—or if a spirit of jealousy comes over him and he is jealous of his wife when she has not defiled herself—

New International Version

and if feelings of jealousy come over her husband and he suspects his wife and she is impure—or if he is jealous and suspects her even though she is not impure—

Majority Standard Bible
and if a feeling of jealousy comes over her husband and he suspects his wife who has defiled herself—or if a feeling of jealousy comes over him and he suspects her even though she has not defiled herself—

New American Bible
or if a man is overcome by a feeling of jealousy that makes him suspect his wife, and she has defiled herself; or if a man is overcome by a feeling of jealousy that makes him suspect his wife and she has not defiled herself—

NET Bible and if jealous feelings come over him and he becomes suspicious of his wife, when she is defiled; or if jealous feelings come over him and he becomes suspicious of his wife, when she is not defiled--

So other translations interpreter this has feelings of jealousy nothing supernatural here than

the words satan, the devil, demons are not used here 

what is meant by spirit 

The Hebrew word for "spirit" is ruach, the basic meaning of which is to breathe heavily. When the word is used of the wind, as it is on some occasions, it denotes a strong, powerful wind. Similarly the ruach (spirit) of God is said to rush suddenly and powerfully on a man (Judges 14:6; Ezek. 3:14; Acts 2:3).

 It is used here in the sense of an over-mastering rush of feeling. Jealousy is a powerful emotion, often stimulated by zeal, and people can find themselves so ruled by it as to find their normal placid personalities completely changed into the most violent and extreme passion and actions. It can cause affection to be replaced by anger towards the one previously loved for it is hardly likely that a man would experience jealousy in regard to someone of whom he is not fond.

Ru´ach and pneu´ma are both used to designate a frame of mind that causes a person to display a certain attitude, disposition, or emotion or to take a certain action or course.

This use of the Hebrew and Greek terms rendered “spirit” are basically related to breath or to air in motion is paralleled to a considerable degree by English expressions. Thus, we speak of a person as ‘putting on airs,’ or of manifesting an ‘air of calmness’ or of ‘having a bad spirit.’ We speak of ‘breaking a person’s spirit,’ in the sense of discouraging and disheartening him. 

As applying to a group of persons and the shared mind set they have, we may talk of ‘getting into the spirit of an occasion,’ or we may refer to the ‘mob spirit’ that infects them. (spirit used as a collective noun of a group of people who have the same mind) 

 Metaphorically we may refer to an ‘atmosphere of discontent’ or to ‘winds of change and revolution blowing through a nation.’ By all of these we refer to the mind working in persons, moving them to speak and act as they do.

Similarly, we read of Isaac and Rebekah’s “bitterness of spirit” resulting from Esau’s marriage to Hittite women (Ge 26:34, 35) 

35 And they were a grief of mind to Isaac and Rebekah.

Literal Standard Version
and they are a bitterness of spirit to Isaac and to Rebekah.

and of the sadness of spirit that overwhelmed Ahab, robbing him of his appetite. (1Ki 21:5) 

King James Bible
But Jezebel his wife came to him, and said unto him, Why is thy spirit so sad, that thou eatest no bread?

A “spirit of jealousy” could move a man to view his wife with suspicion, even to bring charges against her of adultery.—Nu 5:14, 30.

All this, which applies to normal relationships, has its application in those that exist between Yahweh and His people. One of His names is that of Qanna or Jealous (Exod. 34:14). It reminds worshippers that He demands their undivided loyalty, and that anything less than that will stimulate the spirit of Jealousy as far as He is concerned (See Ezek. 8:5). A believer's love waxes cold (see Matt. 24:21; Rev. 2:4) when alienation of affection is caused through worldly influences, and this becomes the cause of jealousy on the part of Yahweh. He clearly detects a lack of the true spirit of love which should motivate those who have embraced the covenant of faith in Christ. They become indifferent towards Him. What is the cause of this alienation of affection? Is it not the influence of the world? Does not James teach that friendship with the world is the cause of enmity with God?

 And does he not indict such who are guilty of this as being "adulteresses" whatever sex they might be literally? Hence, in the terms of this parabolic law, the spirit of jealousy can come upon God, Who is described as Israel's Husband (Isa. 54:5). In that light, this law had a significance for every Israelite, irrespective as to their normal domestic relationships.

Many of those accused of adultery in the Scriptures were physically very moral people dwelling in complete unity with their wives, but guilty of a friendship with the world that constituted them spiritual adulteresses (James 4:4). And that, we believe, is the key to this law. When a woman lacked in wifely duties, she became subject to this law of jealousy; when a believer lacks in his duties towards the Truth and towards God, he, too, incites the spirit of jealousy in God.