OK, I owe you an apology on that one. I looked at the wrong entry in my Greek lexicon. You're right, it is present tense, and in this verse, it means "living one's life" in sanctification, growth in Christ.
it is taking steps toward maturity. “Light” in the Bible can be a metaphor for life, happiness, righteousness, or understanding. The Bible is clear that light comes from the Lord God.
He is the opposite of evil. Putting it all together, “walking in the light” means “growing in holiness and maturing in the faith as we follow Jesus.” It has no connotation of obedience to a command or a law, but becoming more Christlike. Which still makes your view incorrect.
it is taking steps toward maturity. “Light” in the Bible can be a metaphor for life, happiness, righteousness, or understanding. The Bible is clear that light comes from the Lord God.
James 1, NASB
17 Every good thing given and every perfect gift is from above, coming down from the Father of lights, with whom there is no variation or shifting shadow.
17 Every good thing given and every perfect gift is from above, coming down from the Father of lights, with whom there is no variation or shifting shadow.
He is the opposite of evil. Putting it all together, “walking in the light” means “growing in holiness and maturing in the faith as we follow Jesus.” It has no connotation of obedience to a command or a law, but becoming more Christlike. Which still makes your view incorrect.
The continued walking is necessary for Christ's blood to continue to cleanse away all sin. Christians do sin, 1 Jn 1:8, so the walking is necessary for the sins to be cleansed away. If ones sins had all been forgiven, past present and future upon initially becoming a Christian, then there would be no need for the Christian to continue to walk in the light to cleanse away sins that do not exist for they were already cleansed away in the past.