As in war, prayer is the communication with headquarters by which the weapons of warfare are deployed according to the will of God. That is the connection between the weapons and prayer in Ephesians 6. Prayer is for war.
Let the Nations be Glad – The Supremacy of God in Missions, John Piper, Baker Academic, 2007, page 48.
HOW ARE YOU USING THE WORD? Since it is given us by the Holy Spirit (2 Peter 1:21), should we not make it our top priority to earnestly seek Him in prayer so we properly use it?