Witness Lee said this quote

Second Corinthians speaks concerning the ministry, which is constituted with, and produced and formed by, the experiences of the riches of Christ through sufferings, consuming pressures, and the killing work of the cross. The ministry is not merely a matter of gift. A person may be able to speak fluently and eloquently and give many good illustrations and proverbs, but this is just a gift. What the church, the Body, needs today is the ministry.

~ Witness Lee

The priesthood of Christ is “not according to the law of a fleshy commandment, but according to the power of an indestructible life” (Heb. 7:16). Aaron was constituted high priest according to the powerless letter of the law, but Christ according to the powerful element of an indestructible life. Our High Priest is constituted of a life which nothing can conquer, but which rather conquers everything! It is a life which cannot be destroyed. A life which saves to the uttermost. The endless, eternal, divine, uncreated life. The resurrection life which has passed the test of death and Hades.

~ Witness Lee

[To] Immediately...turn to our spirit and exercise our spirit to contact God...practically means that we do not trust in ourselves but in God.

~ Witness Lee

The Corinthians talked about spiritual things, but they did so in a fleshy and soulish way. The apostle Paul told them in the first book that they were fleshy and not spiritual (3:1), and in chapter 2 of the first book, he spoke of soulish men (v. 14). A spiritual man (v. 15) is one who does not behave according to the flesh or act according to the soulish life but lives according to the spirit, that is, his spirit (Rom. 1:9) mingled with the Spirit of God (8:16; 1 Cor. 6:17). Such a one is dominated, governed, directed, moved, and led by such a mingled spirit. Although the Corinthians spoke much about spiritual things, the apostle Paul designated them as fleshy and soulish. They were talking about spiritual things in the soul and in the flesh. Some may talk about the heavenly things in Ephesians, but they do so as Corinthians—in the soul or in the flesh.

~ Witness Lee