And he spoke a parable to them to this end, that men ought always to pray, and not to faint;…
When a pump is frequently used, but little pains are necessary to obtain water; the water pours out at the first stroke, because it is high; but if the pump has not been used for a long time the water gets low, and when you want it you must pump a long while, and the water comes only after great efforts. It is so with prayer. If we are instant in prayer, every little circumstance awakens the disposition to pray, and desire and words are always ready. But if we neglect prayer it is difficult for us to pray.
Parallel VersesKJV: And he spake a parable unto them to this end, that men ought always to pray, and not to faint;