18 A strong wind was blowing and the waters grew rough.

18 The sea became rough because a strong wind was blowing.

18 And the sea arose by reason of a great wind that blew.

18 Soon a gale swept down upon them, and the sea grew very rough.

18 Then the sea arose because a great wind was blowing.

18 By now a strong wind was blowing, and the waves on the lake were getting bigger.

18 And the sea was rising by reason of a great wind that blew.

18 and the sea was agitated by a strong wind blowing.

18 A strong wind started to blow and stir up the sea. 

18 Then a high wind arose, and the sea began to churn.

18 The sea became rough because a strong wind was blowing.

18 And the sea began to be stirred up because a strong wind was blowing.

18 A strong wind was blowing, and the water became rough.