As the saying goes, when you pray for rain, bring an umbrella. Why? Because He promises that the prayers of a person praying with the right intentions don't just disappear into the ceiling—they have serious power. They "avail much." How much? Try it and see!

I don’t know what you’ve heard, but the truth is... “Confess your trespasses to one another, and pray for one another, that you may be healed. The effective fervent prayer of a righteous man avails much.” James 5:16 (NKJV)