Regarding Persevering In Prayer

I look at a stone cutter hammering away at a rock a hundred times without so much as a crack showing in it. Yet at the 101st blow it splits in two. I know it was not the one blow that did it, but all that had gone before.

[See the parable of the persistent widow in Luke 18, a parable Jesus told his disciples to show them that they should always pray and not give up.]