Prayer is a salve for every sore, a remedy for every malady; and when we are afflicted with thorns in the flesh, we should give ourselves to prayer. If an answer be not given to the first prayer, nor to the second, we are to continue praying. Troubles are sent to teach us to pray; and are continued, to teach us to continue instant in prayer.
By the light of nature we see God as a God above us, by the light of the law we see Him as a God against us, but by the light of the gospel we see Him as Emmanuel, God with us.