Ok, I'll do my best to explain my understanding, y'all get to agree or disagree with me as you wish
I'm using KJV because that's the only way I can search by word number.
Mat 5:28 But I say unto you, That whosoever looketh on a woman to lust1937 after her hath committed adultery with her already in his heart.
Mat 13:17 For verily I say unto you, That many prophets and righteous men have desired1937 to see those things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them.
Luk 15:16 Andhe would fain1937 have filled his belly with the husks that the swine did eat: and no man gaveunto him.
Luk 16:21 And desiring1937 to be fed with the crumbs which fell from the rich man's table: moreover, the dogs came and licked his sores.
Luk 17:22 And he said unto the disciples, The days will come, when ye shall desire1937 to see one of the days of the Son of man, and ye shall not see it.
Luk 22:15 And he said unto them, With desire1939 I have desired1937 to eat this passover with you before I suffer:
Act 20:33 I have coveted1937 no man's silver, or gold, or apparel.
Rom 7:7 What shall we say then? Is the law sin? God forbid., Nay, I had not known sin, but bythe law: for I had not known lust,1939 except the law had said, Thou shalt not covet.1937
Rom 13:9 For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet;1937 and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbor as thyself.
1Co 10:6 Now these things were our examples, to the intent we should not lust after1938 evil things, as they also lusted.1937
Gal 5:17 For the flesh lusteth1937 against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
1Ti 3:1 This is a true saying, If a man desire3713 the office of a bishop, he desireth1937 a good work.
Heb 6:11 And we desire1937 that every one of you do show the same diligence to the full assurance of hope unto the end:
Jam 4:2 Ye lust,1937 and have not: ye kill, and desire to have,2206 and cannot obtain: ye fight and war, yet ye have not, because ye ask not.
1Pe 1:12 Unto whom it was revealed, that not unto themselves, but unto us they did minister the things which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire1937 to look into.
Rev 9:6 And in those days shall men seek death, and shall not find it;846 and shall desire1937 to die, and death shall flee from them.
The 3 Greek words translated 'lust, desire, covet' are 1937epithumētēs, 1938epithumētēs, and 1939ep-ee-thoo-mee'-ah
as you can see, they are very similar words, and according to Strongs, the root of 1937 is this
"From G1909 and G2372; to set the heart upon, that is, long for (rightfully or otherwise): - covet, desire, would fain, lust (after)."
Now, I only did a word search on 1937, as that's the word recorded as used in the 'lust after a woman' that Yahushua said would be committing adultery in the heart.
As you can see in the above verses referencing the context and use of the 1937 word, lust is not always a bad thing, only when desiring something that belongs to someone else.
Another thing I'd like to point out about Matt 5:28 is that Yahushua used the word 'gune'. This is the equivalent word to H802 ish-shaw', naw-sheem'. Now, hold on a little bit, and get the gist of this. He was saying 'woman' as in grown woman, the Hebrew culture basically assuming that once a woman is of age it is her 'duty' to get married and bear children. A young 'woman' ie, girl was called a maiden. It was not considered wrong to lust (desire greatly for a wife) a young lady who was not spoken for. Yes, even if you were already married, it was not wrong, nor was Yahushua saying it was. He was saying that if you are coveting a man's woman, ie, greatly desiring to the point of obsession, then you are committing adultery of the heart. So, he was saying you were breaking the 10th commandment. Simple as that. No new rules, just exposing the heart as Torah is intended to do.
Now, from the westernized mindset, this lust word has been twisted so badly that if a fellow notices any good looking female, there are those standing in line to accuse him of lusting, when he has done no such thing. Sure it's inappropriate to 'dress down' a woman with your eyes, allowing your eyes to run over a shapely person. But just turning your head because you notice a pretty lady is no more inappropriate than appreciating a beautiful sunset or mountainside. Well, not unless your twisted mind is really that out of control that you instantly get nasty thoughts, but if you really are that sick, I'd like to suggest you commit yourself.
OK, I've ranted long enough, my point isn't to get so far into this, just to show that lust in and of it'self is not an evil thing. Lusting after that which is right is indeed commendable. And I think Scriptures speak for themselves clearly enough that a man who finds a good woman indeed has found a good thing, and receives favor from Yahweh. And from the looks of things, Yahweh didn't seem to mind the head of household having more than 1 helpmeet. He did however, seem to realise that a house with 2 heads would not stand, thus did not allow the woman to attempt to try and have 2 in the headship position.
That's all folks.
kickme, and soon, please