John 6:19

five and twenty or thirty furlongs This pretty closely corresponds with -in the midst of the sea" (Matthew 14:24). The lake is nearly seven miles across in the widest part.

walking on the sea There is no doubt that this means on the surface of the water, although an attempt has been made to shew that the Greek may mean -on the sea-shore." Even if it can, which is perhaps somewhat doubtful, the context shews plainly what is meant. How could they have been afraid at seeing Jesus walking on the shore? S. Mark tells us that it was about the fourth watch, i.e. between 3.0 and 6.0 a.m. S. Matthew alone gives S. Peter's walking on the sea.