How do I create a scripted-surface gui that moves from a message to message?

I want it to go from one message to another.

ITS BEEN ANSWERED THANK YOU

Surface Guis.

Edit: Then add TextLabels to the surface gui and change the .Text of it?

local msg = {
	"Message One",
	"Message Two"
}
local length = 1 -- Amount of time inbetween messages

while wait(length) do
	game.Workspace.Part.SurfaceGui.TextLabel.Text = msg[math.random(1, #msg)];
end