与主成为一灵
在林前六章十七节保罗说，“但与主联合的，便是与主成为一灵。”本节的联合，指信徒藉着信入主（约三15-16），与祂有生机的联结。这联结可用枝子与葡萄树的联结（十五4-5）说明。这不仅是生命的事，也是在生命（神的生命）里的事。这样与复活之主的联结，只能在我们的灵里。
“一灵”指明是灵的主与我们的灵调和。我们的灵已经由神的灵所重生（约三6），这灵现今在我们里面（林前六19），并与我们的灵是一（罗八16）。这是主的实化，祂藉复活成了赐生命的灵（林前十五45，林后三17），现今与我们的灵同在（提后四22）。在保罗的书信里，常说到这调和的灵，如在罗马八章四至六节。
与主生机的联结
林前六章十七节指明我们与基督生机的联结。与主成为一灵，就是进入与主生机的联结里，生机的与祂联结。这个生机的联结使我们的身体能成为基督的肢体。基督住在我们的灵里，并从我们的灵扩展遍及我们里面的人，因而安家在我们心里。不仅如此，按照罗马八章十一节，祂想要从我们里面，把祂自己这生命分赐到我们物质的身体里。因此，基督从我们的灵扩展到我们的魂，再从我们的魂扩展到我们的身体。这样，我们的身体就成了祂的肢体。
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One Spirit with the Lord — 1 Cor. 6:16-17
In 1 Cor. 6:17 Paul says, “But he who is joined to the Lord is one spirit.” The word joined in this verse refers to the believers’ organic union with the Lord through believing into Him (John 3:15-16). This union is illustrated by that of the branches with the vine (John 15:4-5). It is a matter not only of life, but also in life, the divine life. Such a union with the resurrected Lord can only be in our spirit.
The expression “one spirit” indicates the mingling of the Lord as the Spirit with our spirit. Our spirit has been regenerated by the Spirit of God (John 3:6), who is now in us (1 Cor. 6:19) and is one with our spirit (Rom. 8:16). This is the realization of the Lord who became the life-giving Spirit through resurrection (1 Cor. 15:45; 2 Cor. 3:17), and who is now with our spirit (2 Tim. 4:22). This mingled spirit is often referred to in Paul’s Epistles, as in Romans 8:4-6.
United with Christ Organically
1 Cor. 16:17 indicates that we are organically united with Christ. To be one spirit with the Lord is to enter into an organic union with Him, to be united with Him organically. This organic union makes it possible for our bodies to be the members of Christ. Christ indwells our spirit, and from our spirit spreads throughout our inner being, thereby making His home in our hearts. Furthermore, according to Romans 8:11, from our inner being He seeks to impart Himself as life into our physical body. Therefore, Christ spreads from the spirit to the soul and from the soul to the body. In this way our bodies become His members.