1:7. "For let not that man think that he shall receive any thing of the Lord."
If a person's faith is constantly wavering back and forth between belief and doubt, he/she should not expect to have his/her petition answered by God. Belief is a prerequisite to answered prayer as well as receiving a miracle from God. I am reminded of Mark 6:5 where Jesus could only heal a few sick people because of the unbelief He encountered.
Pastor Jack Howell
"Some bring God's curse on them by marking off part of the Bible, calling it erroneous, uninspired, less than the very Word of God." - Dr. John R. Rice
"For I am not ashamed of the gospel of Christ: for it is the power of God to salvation to every one that believes; to the Jew first, and also to the Greek." (Romans 1:16)