Passage
for the truth`s sake which abideth in us, and it shall be with us for ever:
2 John 1:2 (ASV)
Nearby Context
2 John 1:1 The elder unto the elect lady and her children, whom I love in truth; and not I only, but also all they that know the truth;
2 John 1:2 for the truth`s sake which abideth in us, and it shall be with us for ever:
2 John 1:3 Grace, mercy, peace shall be with us, from God the Father, and from Jesus Christ, the Son of the Father, in truth and love.
2 John 1:4 I rejoice greatly that I have found [certain] of thy children walking in truth, even as we received commandment from the Father.
Study Lenses
The verse centers on "truth", "sake", "abideth", "shall", and "ever". It is saying that the verse draws attention to "truth" and "sake", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "The elder unto the elect lady and..." into verse 3's "Grace mercy peace shall be with us...", so "truth" and "sake" belong inside that flow. In 2 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "truth" and "sake" with trust shaped by these words, not by a vague optimism outside the passage.