Prayer, Its Power: John 14:13-14, Philippians 4:6, Romans 8:26-27.
13 Whatever you ask in my name, this I will do, that the Father may be glorified in the Son. 14 If you ask me anything in my name, I will do it.
6 do not be anxious about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.
26 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groans too deep for words. 27 And he who searches hearts knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God.