Carnality, immaturity & even worldliness of believers is so common in local churches today, that most of us have no idea of what really means a mature local church.
Spiritual christians are very few and scattered in different places but we lack so much continual spiritual growth as a local body of Christ.
I believe that for a church to be mature, first of all her elders or leaders should be godly men who walk in the Spirit and are filled with the Holy Spirit. Their faith in God is such an example as worthy of imitation (Hebrews 13:7)
They have a spiritual understanding of the Word of God and preach it with unction. They lift up the banner of Truth and proclaim the whole counsel of God to the body of Christ and maintain the pure biblical doctrines & apostolic teaching.
Like apostle Paul they "press toward the mark for the prize of the high calling of God in Christ Jesus." (Philippians 3:14)
They respect (authentic) apostolic, prophetic, evangelistic, pastoring & teaching ministries as Christ's gifts to his church. These gifts are necessary "to equip the saints for ministry, to build up the body of Christ, until we all attain to the unity of faith and of the knowledge of the Son of God, to a full-grown man, to the measure of the stature of the fullness of Christ." {Ephesians 4:12,13)
A mature local church is under the headship, kingship & lordship of Jesus Christ. Her born again believers are aware of the presence of God in their local gatherings to worship God and its programs are subject to the Holy Spirit guidance. The elders take care that there is order in the House of God but at the same time spiritual freedom for the exercise of spiritual gifts and especially of prophecy that is very profitable for "upbuilding, encouragement & consolation." (Corinthians 14:3)
Also those who are spiritual admonish the believers to pursue love which is the greatest of God's gifts and without it we are "nothing". They teach by example how to love their neighbors and each-other and how to obey God's greatest commandments from the heart.
A mature church has at least a good minority of mature believers who are praying men of God, who build themselves up in "in their most holy faith and praying in the Holy Spirit." (Jude 20)
They are diligent to make their calling & election sure by making every effort to supplement to their faith those necessary qualities that will provide for them a rich entrance into the eternal kingdom of their Lord & Savior Jesus Christ. {see 1Peter 1)
They follow the way of the cross & walk on the highway of holiness and have a personal knowledge of their Lord. They overcome sin by the power of the Holy Ghost working within.
They have a burning passion for Christ to be glorified in their lives and a burden for the salvation of the lost.
They have a godly character because Christ is indwelling inside them. They decry humanistic emphasis in the church and share a God-centered gosple. Their attention and focus is upon Christ and not on man-made theologies, human ideas or culture.
They are true witnesses of the Lord Jesus Christ in the last days & overcomers.
Like the five wise virgins they are ready for the midnight coming of their Bridegroom, their lamps are filled with oil and burning brightly as they go out to meet the Bridegroom.
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