MEANING OF :-
(1) IN THE SPIRIT – To be baptized and the Holy Spirit is in you.
(2) Filled With The Holy Spirit – To have a deeper relation with Him. You need to let the Holy Spirit to use you for various ministries and to fulfill His promise and to let lose your own spirit and be filled with the Holy Spirit to do His will, i.e. to let Him take control of your mind, your emotions, your will and your spirit.