Differentiating Between Allah and Its Messengers

S 4:150 Those who disbelieve in Allah and his messengers and want to differentiate between Allah and his messengers and they say: We believe in some and disbelieve in others. And they want to take a way between that.

Those who disbelieve in Allah and its messengers? They want to differentiate between them? Should we understand by this that there is no difference between them? Is Allah a messenger? Are the messengers Allah or equal to Allah?

Further reading:

Allah the Messenger

We Make No Distinction Between Messengers