'Matter' in the Bible

But he is a Jew who is one inwardly; and [true] circumcision is circumcision of the heart, by the Spirit, not by [the fulfillment of] the letter [of the Law]. His praise is not from men, but from God.

Therefore one must be subject [to civil authorities], not only to escape the punishment [that comes with wrongdoing], but also as a matter of principle [knowing what is right before God].

for the kingdom of God is not a matter of eating and drinking [what one likes], but of righteousness and peace and joy in the Holy Spirit.

that you may receive her in the Lord [with love and hospitality], as God’s people ought to receive one another. And that you may help her in whatever matter she may require assistance from you, for she has been a helper of many, including myself.