These are the incoming generations that did not know that they should make known all of the miracles that were done for Yehoshua at the time that they fought Canaan. And because of this, they become weak in their faith in Hashem. And for that, these nations were place to test them

ONLY SO THAT THEY SHOULD KNOW: It wants to teach that only because of this they will become aware of the wonders of the miracles that were done for them since then

...TO TEACH THEM WAR: It wants to say that with the remaining nations, did (Israel) not fight them (the nations)? Therefore it was a need to teach them the strategies of war. Because the generation before them, in the days of Yehoshua, they (that generation) did not know the strategies of war because Hashem fought for them. But after that, they needed to know it because of their actions Hashem will leave them to chance. Therefore they should be informed to know the miracles that were done since and trust in Hashem from now on

FIVE: Look back on the text before this where it says "and these are the nations... five...

...THE COMMANDERS OF THE PHILISTINES: It wants to teach, the places of their kingdoms. Even though Bnei Yehudah conquered them (the kingdoms) from the Philistines: Azah, Ashkelon, Ekron, as its written above, behold after a while, the Philistines returned took it (back) from their hands. Therefore Judah was not able to completely to expel them.

DWELLING IN MOUNT LEBANON: It wants to teach all of the Canaanites... that dwelt in Mount Lebanon to Mount Baal Hermon... to the place that they came to, Lebo Chamat.

these nations...

...WILL THEY LISTEN: without going after their gods

AND THEY TOOK: It wants to teach that they didn't withstand the test, and they took their daughters... at the end of the matter it was because of this that they ended up serving their gods

AND THEY DID: Up until this point in, the Book was speaking in general about the days of the judges. From now on, it returns to tell the details of the days about each of the judges. And it says that before the first judge was established, they acted evilly

OTNIEL: It focuses on "savior" to teach that Otniel was established to save.

SPIRIT OF GD: The awakening of wisdom to judge, and the courage to wage war

...AND HE STRENGTHENED HIS HAND: He strengthened his hand for victory every time

AND IT WAS QUIET: By this, the land was quiet and rested from war until the end of the forty years from the time of the beginning of the slavery as its written in Seder Olam

AND HASHEM STRENGTHENED: They (Moabites) were weak, but Hashem strengthened them over Israel because of their evil actions.

More than just his nation

from the tribe of Benjamin

...A LEFTY (CRIPPLED). It is explained that the reason why the king of Moab was not guarded from Ehud's sword was because he was a lefty. Normally it (the sword) hangs on the left thigh so that its comfortable to grab with one's right hand, but this is not the case and therefore there was nothing noticeable on his left thigh underneath his outer garment and therefore they didn't feel anything because they did not think that he was a lefty

...AND THEY SEND... A TRIBUTE: So that they don't suspect anything and they trust him when they see him his submission in bringing a tribute

TWO MOUTHS: To kill him with ease and speed

...A CUBIT IN LENGTH. Less than the normal measurement of a sword so that he can gird it underneath his outer garment. It would have been noticeable bump if it was the length of a normal sword

ON HIS RIGHT THIGH: So that its easier for him to grab it with his left

A stout man: this was also the reason for his death. Because he was fat and a big guy, it was hard for him to stand up and while he was busy with standing up, he was not able to guard himself from Ehud

FINISHED BRINGING: After he gave over the tribute

...AND HE SENT: Because with one it is easier to escape. This is not to for a group

He returned himself as if he forgot something.

Next to Gilgal.

A secret thing: It wants to teach that "I did not tell you this when I was here with the people who brought the tribute.

And he said silence: As its said "if its a secret matter in front of your people, be quiet and don't speak in the ears of my people who are standing here.

...And they left themselves when they heard the word of the king.

He came close to him

on the upper cool level: when it was hot, he would sit in the upper level made of a lot of windows to cool himself down

By himself because those who were standing by him left

A word of Hashem: and as it appears that the proper thing is to stand when you hear it. And his intention was to slow him down when he was standing up so that he doesn't expect it

And Ehud Sent: (his sword) when he was still struggling to stand

Also the handle: so that he would die immediately without screaming. it was stuck deep.

And the fat closed it: he grabbed the blade of the sword so that it wouldn't come out. Ehud did not draw the sword from his stomach because he felt that less blood will drip on him and it will excite the people that will see it on his way out

the waste left him: this was a reason why (the guards) thought that he was reliving himself because the smell of the waste was disgusting

The upper cold room

He left form the portico

It wants to say that nothing bad is happening, he's only reliving himself

For a long time: They waited a time that was appropriate that he would be done reliving himself even if he took a while.

The Key: It was in their hands to open the door from the outside

They waited and delayed until it became embarrassing

Pesilim was in the land of Moab, and he ran to Seir that was from the land of Israel.

When he came to the land of Israel

and he blew (the shofar) to make a sign to gather

They chased after: its to say that they went quickly

Because Hashem gave: what was enough in his hand to kill the kind

The bank of the Jordan on the bank of Moab: the land of Moab was on the eastern bank of the Jordan, and they (the Jews) captured the place on the other side of the Jordan so as to not give the Moabites, that were in the land of Israel, permission to pass back into their own land

Because in the land of Israel they were the best of them

From the ones that were in the land of Israel

the end of the eighty years is from the beginning of the subjugation

In the year that Ehud died, Shmagar became a judge and he died in that year

Its to teach that this his salvation was not a great one as Ehud's was. but in any place, he did also made a salvation.