Psalm 22:24, 46:1, and 145:18, and Nahum 1:7 each suggest that god helps those who pray to him. Indeed, faithful everywhere often turn to god for help when life becomes difficult. They believe that if they pray hard enough, their morbidly obese, chain smoking, alcoholic uncle will survive his fifth heart attack.
Elsewhere in the bible, however, god is found numerous times to look at man’s suffering with nonchalance, despite their prayers. God forsakes man in 1 Samuel 8:18, Psalm 10:1, Psalm 22:1-2, Isaiah 1:15, Isaiah 45:15, Ezekiel 20:3, Habakkuk 1:2, and Hosea 5:6.
In conclusion, you can’t count on god to cure that cancer currently wreaking havoc on your gastrointestinal tract. Although he listens to everyone who calls out to him, sometimes he doesn’t. You’d better play it safe and see a doctor.