Help Rewriting VBA Function

I was wonder if someone could help me rewrite this VBA function to remove the application Volatile?

Option Explicit

Function My_Text_Join(delimiter As String, ignore_empty As Boolean, text_range As Range) As String

Application.Volatile
Dim c As Range
Dim n As Long
n = 0
For Each c In text_range
 If ignore_empty = True Then
 If VBA.IsEmpty(c.Value) = False Then
 If n = 0 Then
 My_Text_Join = c.Value
 Else
 My_Text_Join = My_Text_Join & delimiter & c.Value
 End If
 n = n + 1
 End If
 
 Else
 
 If n = 0 Then
 My_Text_Join = c.Value
 Else
 My_Text_Join = My_Text_Join & delimiter & c.Value
 End If
 n = n + 1
 
 End If
Next

End Function

Thank You

Josh