VBA Code - Copy / Paste And Then Format Range

I have this code that copy/pastes a range from another sheet for every nth row. In the code I have pasted cells I need to merge the cell with the cell to the right and format it. I thought I was doing ok but the code keeps returning an error (run-time 1004) and I don't know the solution, it is beyond my level of VBA.

Code:
Sub test()
Dim ws1 As Worksheet
Dim ws2 As Worksheet
Dim lngRowCounter As Long
Dim newRowCounter As Long

[Code] ...

The code in red is the problem and I have commented it out so it can run, but I need it to merge and format. I don't know how to address range/cells in column B and C together (they are the two cells I wish to merge and format).