Variables To Contruct The Name Of The Active Array

I am trying to construct an indirect array reference as follows;

Dim A10 As Variant
Dim A11 As Variant
Dim A12 As Variant
For i = 0 To 2
String1 = "A" & (10 + i)
String1 = Cells(6, D1_CNum + i).Resize(2995, 1)
Next

But the above doesn't work, what would be the correct way of creating a reference to an Array using variables to contruct the name of the active Array?

I was hoping String1 would equal "A10", so that on the Cells command Array A10, A11 and A12 would be filled using the value of String1??