5mm silk on flex rods. 
45x80 
Job 37 
At this also my heart trembles,
And leaps from its place.
2 Hear attentively the thunder of His voice,
And the rumbling that comes from His mouth.
3 He sends it forth under the whole heaven,
His lightning to the ends of the earth.
4 After it a voice roars;
He thunders with His majestic voice,
And He does not restrain them when His voice is heard.
5 God thunders marvelously with His voice;
He does great things which we cannot comprehend.
Psalm 29:3
3 The voice of the Lord is over the waters;
The God of glory thunders;
The Lord is over many waters.