What sort of record keeping method does God/Jesus use?

A trillion page note book and a pencil.

DNA can store one bit of information in about 10 atoms. A trillion atoms is less than a nanogram.

Even with current hard drive technology, a dossier on every person who ever lived would fit on a relatively small disk drive farm.

i could wager which you have relatively abbreviated the checklist and surpassed over most of the religious subjectively generated ends, like the JW's prediction of the top of the worldwide, then there replaced into 1977 (be conscious the 7's), etc...

God knows everything. He needs to method. Your numbers don't matter to Him. He even knows your thoughts and what you intend to do...

Hebrews 4:12,13 - For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, ... and is a discerner of the thoughts and intents of the heart. And there is no creature hidden from His sight, but all things are naked and open to the eyes of Him to whom we must give account. ~ Note: The word for discerner also means relating to judging, fit for judging, skilled in judging. The word for intents also means mind, the act of thinking, consideration, meditation, a thought. So even our thoughts are judged by God's word. The word for heart also means the centre and seat of spiritual life, the soul or mind. This explains why heart is often used for soul or spirit. The word for eyes also means the eyes of the mind, the faculty of knowing. You see, God knows our thoughts and He judges them by His word; so we better not have a corrupt mind, but believe and obey God's word with it.

The Lord knows all, there is no way that he can encounter a problem. He knows all my sins I don't even remember doing. Imagine all that let alone all the souls.

He uses the book of life

Jesus doesn't care about details like that. He forgives all the church folks, and everybody else can go to hell.

The fingers on his hand, he lost count at 4

The BOOK OF LIFE!!!!

every sin is written in there of every person

and only a few thausants will go to heaven

I'd say he probably downloads Santa's list every year for updates.