Outlook email. Help with text within the body

I have a macro which opens an excel file, updates it, then attaches it to an Outlook email. Rather than showing what appears within the body of the email as separate text (as shown in my example), I would like to use text from a range of cells within a specific tab in the active workbook. For space reasons I have only shown the following part of the macros. Can anyone help?

emailItem.Body = "Hi," & vbNewLine & vbNewLine & "Please find attached, Weekly Error Log." & _
    vbNewLine & vbNewLine & _
    "Kind Regards," & vbNewLine & _
    "Retail Accounts Team"
emailItem.Attachments.Add ActiveWorkbook.FullName

Administrator's note: Please take the time to review our rules. There aren't many, and they are all important. Our guidelines recommend code tags. I have added them for you this time because you are a new member. --6StringJazzer


Thank you