It does not occur in the gospels. A Christian is sure in his hope. Hope in general is a wish, supported by trust, of getting something. Christian hope is much more than that, because Christian hope is certainty of getting what is hoped, because God has promised it. What we do not see we do hope.
Unbelievers lack hope.
Christian hope is the opposite of mistrust and insecurity, which are proper of the unbelievers, because they have nobody in which they can hope. Hope cast out uncertainty, doubts and anxiety. Abraham, a model of hope. The basis of hope is the promise of God. Paul sure of his hope.