Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working. James 5:16

Therefore I tell you, whatever you ask in prayer, believe that you have received it, and it will be yours. Mark 11:24

Do not be anxious about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God. Phillipians 4:6