'Spiritual' in the Bible

To the saints and faithful believers in Christ [who are] at Colossae: Grace to you and peace [inner calm and spiritual well-being] from God our Father.

For this cause we also, since the day we heard it, do not cease to pray for you, and to desire that ye might be filled with the knowledge of his will in all wisdom and spiritual understanding;

in whom are hidden all the treasures of wisdom and knowledge [regarding the word and purposes of God].

See to it that no one takes you captive through philosophy and empty deception [pseudo-intellectual babble], according to the tradition [and musings] of mere men, following the elementary principles of this world, rather than following [the truth—the teachings of] Christ.

And in Him you have been made complete [achieving spiritual stature through Christ], and He is the head over all rule and authority [of every angelic and earthly power].

In Him you were also circumcised with a circumcision not made with hands, but by the [spiritual] circumcision of Christ in the stripping off of the body of the flesh [the sinful carnal nature],

and have put on the new [spiritual] self who is being continually renewed in true knowledge in the image of Him who created the new self—

Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.

Epaphras, who is one of you and a bond-servant of Christ Jesus, sends you greetings. [He is] always striving for you in his prayers, praying with genuine concern, [pleading] that you may [as people of character and courage] stand firm, [spiritually mature] and fully assured in all the will of God.