NT.filter - rwp egegonei:

rwp@John:6:17 @{Were going} (\rchonto\). Picturesque imperfect. {It was now dark} (\skotia d egegonei\). Past perfect active of \ginomai\. While they were going, "darkness had already come." {And Jesus had not yet come to them} (\kai ouk elluthei pros autous ho Isous\). Another past perfect active of \erchomai\ with negative \oup\. Darkness had come, but Jesus had not come, while they were going over the sea. The tenses in these verses are very graphic.