Luke 11:5

Tertullian The Prescription Against Heretics

The neighbour was without bread, and therefore he knocked; but as soon as the door was opened to him, and he received the bread, he discontinued knocking.[136]

Tertullian Against Marcion Book IV

was able to proclaim these duties and rewards by Christ, in order that man, who by sinning had offended his God, might toil on (in his probation), and by his perseverance in asking might receive, and in seeking might find, and in knocking might enter. Accordingly, the preceding similitude[1067]

Tertullian On Prayer

."[46]

Origen Commentary on Matthew Book XI

But let us, not according to the tradition of the elders among the Jews, but according to sound reason, endeavour to purify our own actions and so to wash the hands of our souls, when we are about to eat the three loaves which we ask from Jesus, who wishes to be our friend;[73]