
Simply, to be filled with the Holy Spirit is when all of your being: every compartment, everything which pertains to who you are, is filled with the Spirit of Christ.
And you shall love the Lord your God with all your heart, and with all your soul, and with all your mind, and with all your strength: this is the first commandment. And the second is like, namely this, You shall love your neighbor as yourself. There is no other commandment greater than these. Mark 12:30-31
This defines what it is to be filled with the Holy Spirit. All your heart is filled. All your soul is filled. All your mind is filled. All your strength is filled with Him. That part of you which cares for the needs of others is also filled with His Spirit so that you do care and act.
Why be filled? Bcos we can’t do anything unless we are. It is by virtue of the Holy Spirit filling every compartment, and all of our being, that we can love God with all our being and love others. Without His Spirit we can do nothing.
The Spirit-filled person believes in Jesus with all their being, with all that they are. Every fiber of their being BELIEVES God and trusts Him.
For in Jesus Christ neither circumcision avails anything, nor uncircumcision; but faith which works by love. Galatians 5:6
Faith works by love. Love comes first and faith follows and is the fruit of love.
Being filled with the Holy Spirit, then, means that if we are filled, then there’s no place for anything else other than His Spirit. No room for doubt, or for sin, or for stupid things. There’s just no room for them anymore. No empty space for them to fill. There is a Divine displacement. Fullness has trumped emptiness.
If there IS plenty of room for sin and doubt, then it’s clear we are not filled, and need to be.
Therefore, YIELD afresh all that you are to God, by faith.
Let not sin therefore reign in your mortal body, that you should obey it in its lusts. Neither yield your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God. Romans 6:12-13
Everything in the Kingdom of God happens by virtue of faith, and by subsequently being filled with the Holy Spirit.
This only would I learn of you, Received you the Spirit by the works of the law, or by the hearing of faith? Are you so foolish? having begun in the Spirit, are you now made perfect by the flesh? Galatians 3:2-3