Amex referral offer

[Jccflat]

Is this in addition to the  4 membership rewards that I get for Groceries 
can someone explain me this offer ?

so total it will be 7 membership points ?

[simplynoir]

If you're referring to your AMEX Gold it should be 8 MR points total

The 4 points you already get for grocery spending and an additional 4 points for the referral bonus