hikkosigyousya ga asa hayaku kuru node, konya no uti ni nimotu wo matomemasu.

It is read ひっこしぎょうしゃ.

• 引っ越し = moving house / a move
• 業者 = a company, operator, or service provider

So 引っ越し業者 means the moving company or the movers.

A learner may notice that 引っ越し mixes kanji and kana. That is normal: it comes from the verb 引っ越す and is commonly written this way.

が marks the subject of 来る.

So:

• 引っ越し業者が来る = the moving company is coming

Here, the speaker is identifying who is coming. That makes が very natural.

If you used は instead, it would sound more like you are setting the moving company as the topic for discussion:

• 引っ越し業者は朝早く来るので…

This is possible in some contexts, but が is the more straightforward choice in this sentence.

Because 早い is an i-adjective, and here it is modifying the verb 来る.

When an i-adjective modifies a verb, it changes to its -く form:

• 早い = early
• 早く来る = come early

So:

• 朝早く来る = come early in the morning

If you said 早い朝, that would mean an early morning as a noun phrase. But here the meaning is about how/when they come, so 早く is needed.

In Japanese, verbs before connectors like ので usually appear in the plain form.

So:

• 来るので = because (they) come / are coming

This is normal even when the main verb at the end of the sentence is polite:

• 来るので、まとめます。

That mixture is very common:

• subordinate clause = plain form
• sentence-ending verb = polite form

You can hear 来ますので in more formal or business-like speech, but 来るので is very standard and natural.

Both can mean because, but they have a different feel.

• ので sounds a bit softer, more explanatory, and a little more objective
• から sounds more direct and sometimes more personal or assertive

So:

• 引っ越し業者が朝早く来るので、今夜のうちに荷物をまとめます。
  = a calm explanation of the reason

If you said:

• 引っ越し業者が朝早く来るから、今夜のうちに荷物をまとめます。

that would still be correct, but slightly more direct.

X のうちに means something like:

• while X is still going on
• within X
• before X ends

So 今夜のうちに means:

• tonight, before the night is over
• sometime during tonight
• while it is still tonight

It does not necessarily mean right now. It means the action should be completed by the end of tonight.

The に marks the time limit or target point for completing the action.

Literally, まとめる means to gather together, put together, or organize.

In the context of moving, 荷物をまとめる naturally means:

• to pack up one’s things
• to get one’s belongings together

So it does not only mean organize in an abstract sense. In this sentence, it strongly suggests packing for the move.

A related expression is:

• 荷造りする = to pack (for travel or moving)

But 荷物をまとめる is very natural here too.

This is a very common feature of Japanese sentence structure.

In many sentences:

• the verbs inside dependent clauses use plain form
• the final verb shows the sentence’s politeness level

So here:

• 来るので = plain form in the reason clause
• まとめます = polite form at the end

That is why the whole sentence still sounds polite, even though 来る is not in ます form.

Japanese often leaves out the subject when it is obvious from context.

Here, まとめます strongly suggests the speaker is the one doing it, so the natural interpretation is:

• I will pack my things tonight

There is no need to say 私は unless the speaker wants to emphasize it or contrast themselves with someone else.

So the omitted subject is understood from context, which is very normal in Japanese.