Verse 4. Again, if any one through mistaken zeal confirms himself in falsities or in truths with the intention of living according to them, whatever his error may be, and yet he is ignorant of it, on the discovery thereof, he shall acknowledge himself in evil.

Like other descriptions of time in the Word, "a day" or a number of "days" describe a spiritual state rather than our natural concept of time. A spiritual "day" describes a state of mind or a state in our relationship with the Lord rather than a 12-hour or 24-hour span of natural time. "Day" describes a state in which we are turned toward the Lord, and are receiving light (which is truth) and heat (which is a desire for good) from the Lord.