Through which the world that then [existed] was deluged with water and perished. [Gen. 1:6-8; 7:11.]
whereby the world that then was, being overflowed with water, perished:
by which means the world that then was, being overflowed with water, perished:
And it was through these that the world of that time was flooded and destroyed.
By water, the former world then, having been inundated with water, perished.
Whereby the world that then was, being overflowed with water, perished.