如果基督教有「宪法」，那可能就是以弗所书。以弗所书是我们所能得到最接近福音宣言的文献，前三章谈的是「教义」，后三章谈的是「行事」。 「行事」这一词从第四章开使频频出现，说明我们知道教义之后，当有的反应就是行出来（而不是教训人）。

关于基督徒的行事，保罗首先谈到「谦卑」。我们要行在谦卑之中，因为谦卑是合一的秘诀。若无谦卑，基督徒的合一就办不到，因为骄傲会破坏合一。

谦卑就是「认识真正的自己」。如果听到别人在背后说我们，其实用不着生气，只需记得，他们若认识「真正的我们」，可能更难听的话都会说出来。

保罗认识他自己是怎样的人呢？在提摩太前书里面他说：「在罪人中我是个罪魁。」表面的客气不是谦卑，真正的谦卑是了解我今天成了何等的人，全是靠着上帝的恩典；若不是祂的恩典，我不知道我今天会是什么景况。

简体圣经 | https://www.bible.com/bible/140/EPH.4.RCUVSS

繁體聖經 | https://www.bible.com/bible/139/EPH.4.RCUV

If Christianity had a "constitution," it might be the book of Ephesians. Ephesians is the document closest to the Gospel proclamation that we can obtain, with the first three chapters discussing "doctrine" and the last three chapters discussing "walk." The term "walk" appears frequently starting in chapter four, indicating that our response to knowing doctrine should be to live it out (rather than just teaching others).

Regarding the “walk” of Christians, Paul first discusses humility. We should walk in humility because it is the secret to unity. Without humility, the unity of Christians cannot be achieved, as pride will destroy it.

Humility means "knowing the real self." If we hear someone talking behind our backs, we don't need to get angry, we just need to remember that if they really knew the "real us," they might say even worse things.

What kind of person did Paul know himself to be? In the book of 1 Timothy, he said that he is the worst of sinners. Politeness on the surface is not humility, real humility is understanding what kind of person I am today, all thanks to God's grace. Without His grace, I don't know what kind of situation I would be in today.

Reading the Bible | https://www.bible.com/bible/59/EPH.4.ESV