Musar sobre Deuteronómio 5:18

Commandment 416 enjoins us not to covet the possessions of our fellow-man because once one fixes one's mind on obtaining the possession coveted it will not be long before one initiates steps to execute such a wish. One's desire to possess the object one has focused on will not be suppressed by the owner's unwillingness to sell it or to accept some other form of compensation. One may not even desist in face of the owner physically defending his property against any takeover. One may eventually resort to violence to acquire the property coveted. This is why the Torah writes in 5,19: ולא תתאוה בית רעך וגו'.

“You shall not covet your neighbor’s house” (Exodus 20:17); “and you shall not desire your neighbor’s house” (Deuteronomy 5:18). We were warned with this not to make evil plots to take the field or vineyard or anything of (your) [our] fellow, even if one gives their price. And we were warned about the thought of this evil thing, that we should not resolve in our thoughts to do it, as it is stated, “You shall not covet.” And if a person longs for his fellow to sell him a field or a vineyard or [any] of his possessions and [the owner] does not want to sell it - but if he pleads with him with many supplications, he will be embarrassed to answer him - it is forbidden to plead with him, as it is like coercion or duress. And one who covets to take any object and is a respected person - such that if he asked the question, they would not let his eminence down - it is forbidden to ask for [any] purchase or grant, unless he knows that [the owner] would give it to him with [full agreement], and not regret giving it to him in his heart.