Heraclitus was a self taught philosopher who lived from 544 to 484 BC in Ephesus. He believed that reason is everything which he called logos. He was therefore the founder of the concept of natural law, which is the idea that common wisdom or order pervades everything.
Heraclitus used logos to mean that reason is behind and in everything and that reason is non-moral, neutral, and indifferent to notions of justice, righteousness, and compassion, it is within nature and discoverable by man.
However, that is far different from how the Bible uses the word logos. The Apostle John under the inspiration of the Holy Spirit wrote that logos was with God in the beginning, is God, and through whom all things were made. The Bible equates logos with Jesus Christ as God who was creator and is sustainor of every particle of matter and the spiritual world also. That is far different than simply an imminent force that brings order in the word as Heraclitus believed (John 1:1-4).
His famous saying, "No man ever steps in the same river twice," emphasized his view of life as always changing, which has a measure of truth in it, but he extended this idea too far. He viewed time as cyclical and pronounced that the universe ignites and extinguishes itself every 10,800 years. A Biblical view of time is linear, has one beginning and one end, as God unfolds his plan though humanity and creation with the culmination of time being the final judgement and Resurrection into eternal life or eternal death.
A good reminder to do all we can to serve God and bring Him glory every day of our lives!