self.entryVariable3 = tkinter.StringVar()
self.entry3 = tkinter.Entry(self,textvariable=self.entryVariable3)

self.entry3.grid(row=16,columnspan=2,rowspan=3,sticky="EW",pady=15)
self.entryVariable3.set("WELCOME!")

scroll2 = tkinter.Scrollbar(self)
self.entry3.config(yscrollcommand=scroll2.set)
scroll2.config(command=self.entry3.yview)
scroll2.grid(row=17,column=2,sticky='W')

self.grid_columnconfigure(0,weight=2)
self.resizable(True,False)
self.update()
self.geometry(self.geometry())