Declaring variables

Is there a way to declare variables in excel? I have a simple copy and paste macro here.

    Dim LastRow As Long
    Dim i As Long
    Dim RangeOne As Long
    Dim RangeTwo As Long

    LastRow = Cells(Rows.Count, "BF").End(xlUp).row

    For i = 3 To LastRow
        If Range("BE" & i).Value <> "" And Range("BD" & i - 1) > 1 And Range("BK" & i - 1) <> "" Then
            Range("BG" & i, "BN" & i).Value = Range("BK" & i - 1, "BR" & i - 1).Value
        End If
    Next i

I defined my range in the loop as RangeOne and RangeTwo so it becomes something like this but it is giving me an error. I know I can name cells out of the editor but is there another way?

    Dim LastRow As Long
    Dim i As Long
    Dim RangeOne As Long
    Dim RangeTwo As Long

    LastRow = Cells(Rows.Count, "BF").End(xlUp).row
    RangeOne = Range("BG" & i, "BN" & i)
    RangeTwo = Range("BK" & i - 1, "BR" & i - 1)

    For i = 3 To LastRow
        If Range("BE" & i).Value <> "" And Range("BD" & i - 1) > 1 And Range("BK" & i - 1) <> "" Then
            RangeOne.Value = RangeTwo.Value
        End If
    Next i