"When the day of Pentecost came, it found them gathered in one place. Suddenly from up in the sky there came a noise like a strong, driving wind which was heard all through the house where they were seated. Tongues as of fire appeared, which parted and came to rest on each of them. All were filled with the Holy Spirit. They began to express themselves in foreign tongues and make bold proclamation as the Spirit prompted them.... Peter stood up with the eleven, raised his voice, and addressed them...
'It shall come to pass in the last days, says God, that I will pour out a portion of My Spirit on all mankind: your sons and daughters shall prophesy, your young men shall see visions, and your old men shall dream dreams. Yes, even on My servants and handmaids I will pour out a portion of My Spirit in those days, and they shall prophesy. I will work wonders in the heavens above and signs on the earth below: blood, fire, and a cloud of smoke. The sun shall be turned to darkness and the moon to blood before the coming of that great and glorious day of the Lord. Then shall everyone be saved who calls on the Name of the Lord.'"
Acts 2:1-4 and 2:14-21
Painting of Pentecost: Botticelli
Painting of Eclipse: Howard Russell Butler, in US public domain due to age