6 But when you ask God, you should firmly trust him. You should not doubt that he wants to help you always, because people who keep doubting God are unstable/changeable [SIM] like a wave of the sea that is blown back and forth by the wind {that goes back and forth when the wind blows} [DOU, SIM]. 7 Indeed, people who doubt should not think that the Lord God will do anything that they request him to do,