Questions to the Verse - Those Who Set The Ranks/37:4

Those Who Set The Ranks - 37:4 That your God is one.

Questions to the Verse (5)
Open Your God is one God:
Open All the messengers brought the message of worshipping one God:
Open Devoting oneself to Religion as a Monotheist:
Open In the context of verses 3, 4; all the books of God contain the common message of "One God", hence the reference is to Jews, Christians and Muslims who read the message.
Open There is no god but Allah:

37:3 37:5