en_obs-tn/content/13/03.md

For three days

In other words, three days after they arrived at Mount Sinai and God first spoke to them.

made themselves ready for God to come near to them

This refers to ceremonial cleansing in preparation to meet with God. This could be translated as: “got ready to meet with God” or “prepared themselves to meet with God.”

sounds of loud trumpets

This could be translated as: “loud sounds came from horns” or “horns were blown and they made loud sounds” or “they heard the loud sounds of horns blowing.” These trumpets were not blown by men, but by God or by his angels.

Moses went by himself

This could be translated as: “God permitted Moses to go up, but he did not permit anyone else to go.”