Genesis 7:18-20

Amplified Bible

¹⁸ The waters became mighty and increased greatly on the earth, and the ark floated on the surface of the waters. ¹⁹ The waters prevailed so greatly and were so mighty and overwhelming on the earth, so that all the high mountains everywhere under the heavens were covered. ²⁰ [In fact] the waters became ^[a]fifteen cubits higher [than the highest ground], and the mountains were covered.