'Lessons' in the Bible

Indeed, the Lord will teach this people [in a more humiliating way]By [men with] stammering lips and a foreign tongue,

So remember and take to heart the lessons you have received and heard. Keep and obey them, and repent [change your sinful way of thinking, and demonstrate your repentance with new behavior that proves a conscious decision to turn away from sin]. So then, if you do not wake up, I will come like a thief, and you will not know at what hour I will come to you.