'Lessons' in the Bible

Look, I and the sons whom the Lord has given me are reminders and object lessons in Israel, sent from the Lord who commands armies, who lives on Mount Zion.

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

Then He proceeded to teach them many lessons in figurative language; and in His teaching He said,

But these are not the lessons which you have learned from Christ;

If you warn the brethren of these dangers you will be a good and faithful servant of Christ Jesus, inwardly feeding on the lessons of the faith and of the sound teaching of which you have been, and are, so close a follower.

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.