17 God says, ‘In the last days I will pour out my Spirit on everyone. Your sons and daughters will prophesy. Your young men will see visions. Your old men will dream dreams. 18 I will pour out my Spirit on my servants, both male and female, and they will prophesy. 19 I will also give you miraculous signs in the heavens above and on the earth below—blood, fire, and swirling smoke! 20 The sun will become dark, and the moon will become red like blood before the great and glorious day of the Lord. 21 But whoever calls on the name of the Lord will be saved.’*