Copy Multiple files to another Workbook - excel

Question

I have the following code which should:
Open the selected files
Copy the three tabs indicated to another workbook
I thought this was working ok but then I realized that it's copying the first selected file the same amount of times as the number of selected files. So basically, it's not opening the other files and copying the tabs to the template. Can you help?
Sub CopySheets()
Dim DialogBox As FileDialog
Dim FilePath, SheetName As String
Set DialogBox = Application.FileDialog(msoFileDialogFilePicker)
DialogBox.Title = "Select Estimates to copy " & FileType
DialogBox.AllowMultiSelect = True
DialogBox.Filters.Clear
DialogBox.Show
If DialogBox.SelectedItems.Count = 1 Then
FilePath = DialogBox.SelectedItems(1)
End If
For i = 1 To DialogBox.SelectedItems.Count
Application.ScreenUpdating = False
Application.DisplayAlerts = False
FilePath = DialogBox.SelectedItems(1)
SheetName1 = "Cover"
SheetName2 = "Summary"
SheetName3 = "Estimate and Schedule "
Set closedBook = Workbooks.Open(FilePath)
closedBook.Sheets(SheetName1).Copy
After:=ThisWorkbook.Worksheets(ThisWorkbook.Worksheets.Count)
Range("B2:Z97").Select
Selection.Copy
Application.CutCopyMode = False
ActiveSheet.Unprotect Password:="zxc"
Selection.Copy
Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
:=False, Transpose:=False
Sheets(SheetName1).Name = i 'I would like this to be the File Name
closedBook.Sheets(SheetName2).Copy
After:=ThisWorkbook.Worksheets(ThisWorkbook.Worksheets.Count)
Range("B5:K39").Select
Selection.Copy
Application.CutCopyMode = False
ActiveSheet.Unprotect Password:="zxc"
Selection.Copy
Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
:=False, Transpose:=False
closedBook.Sheets(SheetName3).Copy
After:=ThisWorkbook.Worksheets(ThisWorkbook.Worksheets.Count)
Range("A3:M70").Select
Selection.Copy
Application.CutCopyMode = False
ActiveSheet.Unprotect Password:="zxc"
Selection.Copy
Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
:=False, Transpose:=False
closedBook.Close SaveChanges:=False
Next i
Application.CutCopyMode = False
Application.ScreenUpdating = True
Application.DisplayAlerts = True
End Sub