[Vocabulary] "don't you" meaning at the begining of a sentence

[Tryna learn English]

For example, the song "Don't you worry child", does it mean "You don't (need to) worry, child" or is it just a question?
I ask this because in the after "Don't you worry child" the songs continues with "see heaven's got a plan for you", so i think if it's just a normal question it wouldn't make sense, because "heaven's got a plan for you, so you don't need to worry, child" would make more sense to me.

 

[MikeNewYork]

Yes, I agree with you.

 

[SoothingDave]

It's not a question. It's a command, an imperative.

 

[MikeNewYork]

Well, it is the imperative mood, but in this case, it is more an encouragement or advice.