17 He said, "God says, In the last days I will send my Spirit on all people. I will speak through your sons and daughters. Your young men will see visions and your old men will have dreams.
18 In those days I will send my Spirit on the men and women who serve me and I will speak through them.
19 In the sky above and on the earth below I will show wonderful signs with blood and fire and clouds of smoke.
20 The sun will be dark and the moon will be like blood. These things will happen before the day of the Lord comes. It will be a great day that will be remembered always.
21 And anyone who calls out to the Lord will be saved."