More efficient way of displaying text?

I want to make a gui that shows text but increments by one character per second. The script is a LocalScript. This is the only way I can think of doing it (right now):

script.Parent.Text = "H"
wait(1)
script.Parent.Text = "He"
wait(1)
script.Parent.Text = "Hel"
wait(1)
script.Parent.Text = "Hell"
wait(1)
script.Parent.Text = "Hello"

This has to be the worst way to do this. My question is how can I make this more efficient. Thanks!