Roblox - "STOP" Loop

local num = 1
local plr = game:GetService("Players").LocalPlayer
local plrchar = plr.Character or plr.CharacterAdded:Wait()
local bill = Instance.new("BillboardGui", plrchar:WaitForChild("HumanoidRootPart"))
bill.Adornee = bill.Parent
bill.Size = UDim2.new(0,1000,0,50) -- using offset after a long time
bill.StudsOffset = Vector3.new(0,10,0)
local text = Instance.new("TextLabel", bill)
text.BackgroundColor3 = Color3.new(1,1,1)
text.BackgroundTransparency = 0
text.BorderSizePixel = 0
text.Size = UDim2.new(1,0,1,0)
text.Font = "Bodoni"
text.TextColor3 = Color3.new(1,0,0)
text.TextSize = 50
while wait(0.25) do
    if num == 1 then
        text.Text = "STOP"
        num = 2
    elseif num == 2 then
        text.Text = "ASASASASA"
        num = 3
    elseif num == 3 then
        text.Text = "WHY DID YOU HAVE TO DO THIS TO ME"
        num = 4
    elseif num == 4 then
        text.Text = "YOU KNOW I COULD HAVE EXECUTED THIS"
        num = 5
    elseif num == 5 then
        text.Text = "SO WHY DID YOU DO THAT"
        num = 6
    elseif num == 6 then
        text.Text = "I AM MAD RIGHT NOW"
        num = 1
    end
end