I think the point is that we need to empty ourselves of flesh, sin, things which entangle, in order that we would have room for the Holy Spirit, His will, desire, right thinking in our lives. There is a constant war between flesh and spirit, so if you crucify the flesh, the spirit does not need to war and is unhindered to thrive and flourish in us.
Dear one,
We cannot empty ourselves of the flesh. If we can empty ourselves of the flesh ? Did God have to send His Son to die on the cross ?
But this is what we have heard:
We know that our old self was crucified with Him (Christ) in order that the body of sin might be brought to nothing, so that we would no longer be enslaved to sin. -Romans 6:6
So dear one, we need to identify ourselves with the things of the Spirit, that is, the words that Christ has spoken through His holy apostles.
We have to fill our souls (minds/emotions/wills) with the words of Christ. We need to speak and believe in our hearts, that is, our spirits proclaim in faith, that our old self was crucified with Him (Christ) in order that the body of sin might be brought to nothing, so that we would no longer be enslaved to sin.
Why now I said about speaking through our spirits? Our spirits are our hearts where we commune with God ; for God is Spirit. In our hearts, is where our conscience is being conformed to the norms and values of God that speaks. In our hearts, we intuitively know that God exists and that we can draw near Him through Christ.
As we have heard:
For through Him (Christ) we both have access in one Spirit to the Father. -Ephesians 2:18
Dear one,
Remember what has spoken:
For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit,
of joints and of marrow,
and discerning the thoughts and intentions of the heart. -Hebrews 4:12
Since joints and of marrow, are tightly knitted, so our souls and our spirits.
The thoughts are of our minds and the intentions of the heart are of our conscience.
Dear one, we have heard:
For those whom he foreknew he also predestined
to be conformed to the image of His Son, in order that he might be the firstborn among many brothers. -Romans 8:29
Dear one, how are we to be conformed to the image of His Son ?
Yes, from our hearts, we speak and believe what Christ has spoken Himself, also through His holy apostles and prophets in the Holy Scripture. When in that manner, our minds remembered what He has spoken to us. When we were baptized, we put on Christ. We appeal to God for new hearts or new consciences through the resurrection of Jesus Christ. With these new hearts, we should walk in the way of the Spirit. And apostle Paul told us:
For those who live according to the flesh set their minds on the things of the flesh,
but those who live according to the Spirit set their minds on the things of the Spirit. -Romans 8:5
For to set the mind on the flesh is death, but
to set the mind on the Spirit is life and peace. -Romans 8:6
So dear one, we are told to offer our minds, that is, to set our minds to the things
of the Spirit.
Our Lord Himself have spoken:
It is the Spirit who gives life; the flesh is no help at all.
The words that I have spoken to you are spirit and life. -John 6:63
So when we offer our minds to the words that the Lord have spoken, we set our minds on the things of the Spirit. Yes, we set our minds to the Spirit of His words. Having our minds ruled or lead by the Spirit of God, we will have life and peace that He promised us.
So dear one, we don’t empty our minds, but this is what we have heard:
We destroy arguments and every lofty opinion raised against the knowledge of God, and
take every thought captive to obey Christ, -2 Corinthians 10:5
So when the enemy weakened our minds with the flesh, we take every thought captive to obey Christ.
Dear one,
every arguments and lofty opinions that are not aligned with God’s words, raised against the knowledge of God — and we are told to take that thoughts captive to obey Christ. How? By submitting our thoughts to God, and resisting every thoughts from the Adversary in the mighty name of our Lord Jesus Christ.
Dear one,
as the wisdom that we heard :
Trust in the LORD with all your heart, and do not lean on your own understanding. -Proverbs 3:5
In all your ways acknowledge Him, and He will make straight your paths. -Proverbs 3:6
So dear one,
Let us trust the Holy Spirit with all our hearts that He helps us in our weaknesses. Yes, when we are weakened by the flesh. Trust in the Holy Spirit whom Christ has sent to help us.
And let us not lean in our understandings or our minds.
Let us acknowledge Holy Spirit
in our ways. For we heard:
When I told
of my ways, you answered me;
teach me your statutes! -Psalms 119:26
Make me understand the way of your precepts, and I will meditate on your wondrous works. -Psalms 119:27
So let us acknowledge what Holy Spirit teaches us. This is what we have heard:
Good and upright is the LORD; therefore He (Holy Spirit) instructs sinners in the way. -Psalms 25:8
He leads the humble in what is right, and
teaches the humble His way. -Psalms 25:9
Likewise, we heard :
Let me ask you only this: Did you
receive the Spirit by works of the law or
by hearing with faith? -Galatians 3:2
Are you so foolish?
Having begun by the Spirit, are you now being perfected by the flesh? -Galatians 3:3
Did you suffer so many things in vain'if indeed it was in vain? -Galatians 3:4
Does he who supplies the Spirit to you and works miracles among you do so by works of the law, or by
hearing with faith' -Galatians 3:5
So dear one, we are filled with the Spirit by hearing with faith. Having begun in the Spirit, let us be perfected through the Spirit. For God supplies the Spirit and work miracles among us by hearing with faith. We thank God for His goodness and wonderful works to us through His Son.
I would not say the way you said : “There is a constant war between flesh and spirit, so if you crucify the flesh,
the spirit does not need to war and is unhindered to thrive and flourish in us.”
For we heard:
Beloved, I urge you as sojourners and exiles to abstain from
the passions of the flesh, which wage war against your soul. -1 Peter 2:11
Dear one, I correct you in love, not to offend you.
For we heard:
that you may approve the things that are excellent,
that you may be sincere and without offense till the day of Christ,
So dear one, sincerely let us approve things that are excellent, that is, things that were spoken by the Lord Jesus Christ who spoke not of His own will but the will of the Father who sent Him.
Let us be filled with the fruits of righteousness that comes through Jesus Christ our Lord to the praise and glory of God.
Amen