This refers to those who help others understand that they are separated from God, as if they were changing the direction in which they were going. Alternate translation: "those who teach others to live righteously" (See: [[rc://en/ta/man/translate/figs-metaphor]])
These people are compared to the stars that shine. Alternate translation: "those who turn ... will shine brightly like the stars forever and ever" (See: [[rc://en/ta/man/translate/figs-simile]])