Payment of GST without registration and GST registration

How can then the individual pay the GST to government without making any GST registration if his/her income is more than Rs. 20 lakhs and below 40 lakhs in a financial year?Is there any way to pay the GST amount without doing the GST registration?

What actions can be taken by the government on that individual if he/she does not pay GST to the government while income is above 20 lakhs and below 40 lakhs in a financial year?

Request to reply to the above queries.

GST registration is must to pay taxes under GST ACT 

my be voluntary or required 

However , CTP and NRTP  there is no threshold limit 

Penalty for non-registration of GST 

Rs. 10,000 or gst liability whichever is higher . 

WHICH THRESHOLD LIMIT ARE YOU TALKING OF WHEN YOU STATE for CTP and NRTP THERE IS NO THRESHOLD LIMIT?