Sjælen er fri.

Because -en is the definite article attached to the noun.

• sjæl = soul / a soul
• sjælen = the soul

In Danish, the definite article is often added to the end of the noun instead of being a separate word like English the.

So:

• en sjæl = a soul
• sjælen = the soul

This is very common in Danish.

Because sjæl is a common gender noun in Danish.

Danish nouns are mainly either:

• common gender → usually take en as the indefinite article
• neuter gender → usually take et

Since it is:

• en sjæl = a soul

the definite form becomes:

• sjælen = the soul

If it were a neuter noun, you would usually see -et instead.

Er is the present tense of at være (to be).

So:

• er = is / are / am, depending on context

In this sentence:

• Sjælen er fri = The soul is free

Danish does not change the verb for different persons the way English does. The same form er is used with different subjects:

• jeg er = I am
• du er = you are
• sjælen er = the soul is

Because fri agrees with the noun it describes.

Here, sjælen is:

• singular
• definite
• common gender

For many adjectives, the basic form is used with a common gender singular noun:

• en fri sjæl = a free soul
• sjælen er fri = the soul is free

Other forms include:

• frit for neuter singular
• frie for plural or sometimes definite attributive use

For example:

• et frit menneske = a free human being
• frie sjæle = free souls

So fri is the correct form here.

That is a very good question, because Danish treats adjectives differently depending on how they are used.

Here, fri comes after the verb er. That means it is a predicate adjective.

With predicate adjectives, Danish usually uses the form that matches the noun mainly by number and sometimes gender, but it does not take the special definite ending that you often see before a noun.

Compare:

• sjælen er fri = the soul is free
  → predicate adjective, after er

but:

• den frie sjæl = the free soul
  → adjective before the noun, definite form

So:

• the soul is free → sjælen er fri
• the free soul → den frie sjæl

No, this is the normal Danish word order for a simple statement:

• Subject + verb + adjective

So:

• Sjælen = subject
• er = verb
• fri = complement/adjective

This is very similar to English:

• The soul is free

Danish word order becomes more noticeable in longer sentences, especially when another element comes first, but this sentence is very straightforward.

A rough English-friendly guide would be something like shyel-en, but not exactly.

A few pronunciation points:

• sj is usually pronounced like a soft sh sound
• æ is a front vowel somewhat like the a in cat, though Danish pronunciation is not identical to English
• -en at the end is a common definite ending, often sounding like a light -en or -uhn depending on speaker and style

So the whole word is approximately:

• sjælen ≈ SHÆ-len

If you want to sound more natural, the first syllable is the important one.

Æ is a Danish vowel that does not match English perfectly.

A useful approximation is:

• like the vowel in cat

But Danish æ can be tenser or longer depending on the word and speaker.

In sjæl, it is the main vowel of the stressed syllable, so it is important to hear and imitate it carefully.

For an English speaker, the main thing is:

• do not pronounce it like English ay
• do not pronounce it like English ee

Keep it as an open front vowel, somewhat near cat.

Fri is pronounced roughly like free in English.

So:

• fri ≈ free

That makes this part of the sentence relatively easy for English speakers.

Yes, but it means something different.

• Sjælen er fri = The soul is free
• En sjæl er fri = A soul is free

The first refers to a specific soul or to the soul in a general, abstract sense.
The second sounds more like you are talking about one soul among others.

So if the intended meaning is the soul is free, then sjælen is the correct form.

Because Danish often puts the definite article at the end of the noun.

English:

• the soul

Danish:

• sjælen

This is one of the first big differences English speakers notice in Danish.

However, Danish can also use a separate word like den or det, especially when there is an adjective before the noun:

• sjælen = the soul
• den frie sjæl = the free soul

So Danish uses both systems, depending on the structure.

No. In modern Danish, nouns are not normally capitalized.

So:

• sjælen er fri

only has a capital S because it is the first word of the sentence, not because sjælen is a noun.

Yes. It is a perfectly complete sentence.

It has:

• a subject: Sjælen
• a verb: er
• a complement: fri

That is enough to form a full statement in Danish.