Verses with the word sleeping in the New Testament (4 verses):

Mark 13:36
Lest coming suddenly he find you sleeping.

Mark 14:37
And he cometh, and findeth them sleeping, and saith unto Peter, Simon, sleepest thou? couldest not thou watch one hour?

Luke 22:45
And when he rose up from prayer, and was come to his disciples, he found them sleeping for sorrow,

Acts 12:6
And when Herod would have brought him forth, the same night Peter was sleeping between two soldiers, bound with two chains: and the keepers before the door kept the prison.