Lelki segítséget kérünk.

Because in Hungarian, when an adjective directly modifies a noun, the case ending usually appears only on the noun, not on the adjective.

So:

• lelki segítséget = spiritual help in the accusative
• not lelkit segítséget

This is normal Hungarian structure. The adjective stays in its basic form, and the noun carries the grammatical ending.

Because it is the direct object of the verb kérünk.

Hungarian marks direct objects with the accusative ending -t. With segítség, that becomes segítséget.

So:

• segítség = help
• segítséget = help, as the object of the verb

This is why the sentence has segítséget kérünk.

Hungarian has two main conjugation patterns for many verbs:

• indefinite conjugation
• definite conjugation

Here, kérünk is the indefinite form. It is used because lelki segítséget is an indefinite object: there is no definite article, and the help is not presented as a specific, already identified thing.

Compare:

• Lelki segítséget kérünk. = We ask for spiritual help.
• A lelki segítséget kérjük. = We ask for the spiritual help.

In the second sentence, a makes the object definite, so kérjük is used.

It is built into the verb.

The ending -ünk in kérünk means we. Hungarian often leaves subject pronouns unstated because the verb ending already shows who the subject is.

So:

• kérünk = we ask / we are asking

If you add mi, it usually gives extra emphasis:

• Mi kérünk lelki segítséget. = We are the ones asking for spiritual help.

Hungarian often leaves out an article when the noun is indefinite or used in a general sense.

So lelki segítséget can mean something like:

• spiritual help
• some spiritual help

It does not need an explicit word for a or some the way English often does.

If you wanted to refer to a specific, known help, you would usually add an article:

• a lelki segítséget

Because that is a very natural Hungarian pattern, especially with an indefinite object like segítséget.

In Hungarian, word order is flexible and depends a lot on emphasis and information structure. A bare indefinite object often stands right before the verb, forming a close unit with it.

So segítséget kérünk is a very normal combination:

• object + verb

Other word orders are possible, but they change the emphasis. For example:

• Mi kérünk lelki segítséget. puts more emphasis on we
• Lelki segítséget kérünk. keeps the request itself central and sounds very natural

Yes. It is a very common and idiomatic expression.

Literally, it is ask help, but in natural English we say ask for help.

You can also say who the help is asked from:

• Segítséget kérünk az orvostól. = We ask the doctor for help.
• Segítséget kértem tőle. = I asked him/her for help.

So segítséget kérni is an important and very useful pattern to learn.

A rough English-style approximation is:

LEHL-kee sheh-GEE-cheh-geht KAY-roonk

A few useful points:

• Stress is on the first syllable of each word: LELki, SEgítséget, KÉrünk
• Hungarian s sounds like English sh
• Hungarian sz would sound like English s, but there is no sz in this sentence
• é is a long vowel, roughly like ay in say, but steadier
• ü in kérünk has no exact English equivalent; it is similar to German ü

You do not need a perfect accent right away, but it helps to notice the long vowels and the first-syllable stress.