2 Bible Verses about Deep Seas

But that person who causes one of these little ones [i.e., humble followers of the Lord] who believes in me to be led astray [from God], he would have been better off to have had a huge millstone tied around his neck and dumped into a deep ocean [Note: This "millstone" was a heavy circular stone rolled over grain to crush it and was moved by an animal walking in a circle].

And when He had finished talking, He said to Simon, "Launch out into deeper water and lower your nets for a catch [of fish]."