Ephesians 1:3 - Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ.
The earthly minded will constantly try to restrain those who are seekers of God with such statements as,"don't become so heavenly minded that you are no earthly good," which is precisely the opposite of true wisdom.
Heaven is the realm into which we are called to abide with Christ Jesus, and the only truly effective ministry we will ever have on this earth is originated from that position.
The church that becomes too earthly minded is not doing the earth any good.
We are called to be a bridge between heaven and earth, and to represent the reality of all we have been given in Christ Jesus in the heavenly places.
Christians should be so saturated with heaven that it is more real to them than anything in the natural realm.
Ephesians 2:4-6 - But God, being rich in mercy, because of His great love with which He loved us, even when we were dead in our transgressions, made us alive together with Christ (by grace you have been saved), and raised us up with Him, and seated us with Him in the heavenly places, in Christ Jesus.