Passage
If we say that we have fellowship with Him and yet walk in the darkness, we lie and do not do the truth;
If we say that we have fellowship with Him and yet walk in the darkness, we lie and do not do the truth;
1 John 1:4 And these things we are writing, so that our joy may be made complete.
1 John 1:5 And this is the message we have heard from Him and declare to you, that God is Light, and in Him there is no darkness at all.
1 John 1:6 If we say that we have fellowship with Him and yet walk in the darkness, we lie and do not do the truth;
1 John 1:7 but if we walk in the Light as He Himself is in the Light, we have fellowship with one another, and the blood of Jesus His Son cleanses us from all sin.
1 John 1:8 If we say that we have no sin, we deceive ourselves and the truth is not in us.
The verse centers on "darkness", "fellowship", "walk", and "truth". It is saying that the verse draws attention to "darkness" and "fellowship", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 5's "And this is the message we have..." into verse 7's "but if we walk in the Light...", so "darkness" and "fellowship" belong inside that flow. In 1 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "darkness" and "fellowship" with trust shaped by these words, not by a vague optimism outside the passage.