We need to focus on the third angel! He is the angel that seals the 144,000. Therefore anything that is linked with the third angel's message is linked with the sealing of the 144,000.

Testimonies Volume 5 page 654 says that the Testimonies are linked with the third angel's message.

The third angel seals the 144,000, therefore the 9 volumes of the Testimonies are linked with the sealing of the 144,000.

Testimonies Volume one page 486 and volume three page 161 says that health reform is closely connected with the third angel's message as the hand is with the body.

The third angel seals the 144,000, therefore the health message is closely connected with the sealing of the 144,000!

The books of Daniel and Revelation are linked with the third angel's message and the third angel seals the 144,000.

Therefore the books of Daniel and Revelation are linked with the sealing of the 144,000!

The third angel's message is righteousness by faith and the third angel seals the 144,000.

Therefore the 1888 message of righteousness by faith seals the 144,000!

These are the truths that the mind must dwell upon when it comes to the 144,000. This will get you in the 144,000. Knowing if the number is literal or spiritual will not get you sealed with this special people. So let's leave this alone and focus on that which is essential which is the above.