Joel 2:28
"And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:"Joel 2:28 (KJV)
Context from Joel 2
26
And ye shall eat in plenty, and be satisfied, and praise the name of the LORD your God, that hath dealt wondrously with you: and my people shall never be ashamed.
27
And ye shall know that I am in the midst of Israel, and that I am the LORD your God, and none else: and my people shall never be ashamed.
28
And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:
29
And also upon the servants and upon the handmaids in those days will I pour out my spirit.
30
And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.