Passage
Dearly beloved, thou dost faithfully whatever thou dost for the brethren: and that for strangers,
Dearly beloved, thou dost faithfully whatever thou dost for the brethren: and that for strangers,
3 John 1:3 I was exceedingly glad when the brethren came and gave testimony to the truth in thee, even as thou walkest in the truth.
3 John 1:4 I have no greater grace than this, to hear that my children walk in truth.
3 John 1:5 Dearly beloved, thou dost faithfully whatever thou dost for the brethren: and that for strangers,
3 John 1:6 Who have given testimony to thy charity in the sight of the church. Whom thou shalt do well to bring forward on their way in a manner worthy of God:
3 John 1:7 Because, for his name they went out, taking nothing of the Gentiles.
The verse centers on "faith", "dearly", "beloved", "thou", "dost", "faithfully", and "whatever". It is saying that the verse draws attention to "faith" and "dearly", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 4's "I have no greater grace than this..." into verse 6's "Who have given testimony to thy charity...", so "faith" and "dearly" belong inside that flow. In 3 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "faith" and "dearly" with trust shaped by these words, not by a vague optimism outside the passage.