I’ve always wondered about this. Here’s an explanation of the 613 Laws that the Jews have written:
From the book entitled “Simple Church” by Tom S. Rainer & Eric Geiger, Broadman & Holman Publishers, Nashville, TN.
“The religious leaders had developed a religious system with 613 Laws. They chose the number 613 because that was how many separate letters were in the text containing the Ten Commandments. Then they found 613 commandments in the Pentateuch (the first five books of the Old Testament). They divided the list into affirmative commands (do this) and negative command (don’t do this).
There were 248 affirmative commands, one for every part of the human body, as they understood it. There were 365 negative commands, one for each day of the year. They further divided the list into binding commands and nonbinding commands. Then they spent their days debating whether the divisions were accurate and ranking the commands within each division.”
Adam….4.26.2008