What does it mean to be spiritual?
It ain't how the world defines it!
Is it a person who spends endless hours on their knees, contorting or flaggelating their bodies or performing some other physical pose to work towards emptying their inner self to gain some form of spiritual enlightenment? No.
Is it someone who attends worship services and sings like an angel in songs of praise? No.
Is it someone who gives lots of money for philanthropic causes to help others? No.
Is it someone who studies the Bible and can quote from memory many important theological truths? No.
So what does it mean to be spiritual, according to God's definition?
The Bible tells us.
A spiritual person is one who is not "fleshly", meaning someone not living immature and guided by worldly passions. One who is not divisive in the Church as in this example below, putting preference of personalities as dividing walls in fellowship with one another in the family of God. When we let our flesh control what we say and how we live, and not the truths of Christ, denying self for Jesus's sake, and true love for our brothers and sisters in Christ, then we are guided not by the Spirit, but by our sinful flesh. That is unspiritual.
Grown-ups in Christ, deny self and sacrificially give to others, even if they prefer something else in the flesh. That is a spiritual person! Walking obedient to Christ as the Holy Spirit leads us all to do.
Think about it. Do you demand your own comforts in most everything you do and places you go, thinking you "deserve it"; or are you dying to self daily laying down your feelings to show Gods love really lives in you?
Listen to how Apostle Paul defines being spiritual below.
"Brothers, I was not able to speak to you as spiritual people but as people of the flesh, as babies in Christ. I gave you milk to drink, not solid food, because you were not yet ready for it. In fact, you are still not ready, because you are still fleshly. For since there is envy and strife among you, are you not fleshly and living like unbelievers? For whenever someone says, “I’m with Paul,” and another, “I’m with Apollos,” are you not unspiritual people?" (1 Corinthians 3:1-4 HCSB Https://bible.com/bible/72/1co.3.1-4.HCSB)
A spiritual person according to God, (and His opinion is the only one that matters) is one who follows Christ, not living in childish devisive ways clinging to a particular pastor or Bible teacher as the guru of your faith. Jesus alone is the "guru" of your faith, follow him, and following him means growing up and denying self.
JESUS said, "If anyone would come after me, let him deny himself and take up his cross daily and follow me." Luke 9:23