Prayer is the most important, infact the disciples did not ask Jesus how to multiply food, miracles or even how to heal people. The disciples observe and watch the daily walk of Jesus. In Luke 11:1 Now Jesus^a]”>[a] was praying in a certain place, and when he finished, one of his disciples said to him, “Lord, teach us to pray, as John taught his disciples.” 

2 Chronicles 7:14. If my people who are called by my name humble themselves, and pray and seek my face and turn from their wicked ways, then I will hear from heaven and will forgive their sin and heal their land.