10. Bring ye all the tithes into the store-house, that there may be meat in mine house, and prove me now herewith,saith the Lord of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.
11. And I will rebuke the devourer for your sakes, and he shall not destroy the fruits of your ground; neither shall your vine cast her fruit before the time in the field, saith the Lord of hosts.
12. And all nations shall call you blessed: for ye shall be a delightsome land, saith the Lord of Hosts.
As for other matters, brothers and sisters, we instructed you how to live in order to please God, as in fact you are living. Now we ask you and urge you in the Lord Jesus to do this more and more.
1 Thessalonians 4:1
Sunday School classes teaches us how to live our life, comforts us in our times of need, helps us to know who God is, and gives us some incite on our future on earth and with God.