Prayer without the word of God will
only work to an extent. Prayer is very important however prayer with the word of
God is most important.
When Jesus fasted and prayed for 40
days and nights He was tempted by the enemy right after. Jesus overcame the
devil by the word.
Mt 4:3 Now when the tempter came to Him, he said, "If You are the Son of God, command that these stones become bread."
4 But He answered and said, "It is written, 'Man shall not live by bread alone, but by every word that proceeds from the mouth of God.'"
5 Then the devil took Him up into the holy city, set Him on the pinnacle of the temple,
6 and said to Him, "If You are the Son of God, throw Yourself down. For it is written: 'He shall give His angels charge over you,' and, 'In their hands they shall bear you up, Lest you dash your foot against a stone.'"
7 Jesus said to him, "It is written again, 'You shall not tempt the LORD your God.'"