en_tn/2th/02/05.md

Do you not remember

This rhetorical question is used to remind the believers of Paul's teachings. It can be translated as "I am sure you remember". (See: rc://en/ta/man/translate/figs-rquestion)

Do you not

"you" refers to the Thessalonian believers. (See: rc://en/ta/man/translate/figs-you)

these things

This refers to the return of Jesus, the day of the Lord, and the man of lawlessness.​

for him to be revealed when it is time for him to be

for him to be revealed when it is time for him to be - "until God decides to reveal the man of lawlessness"

mystery of lawlessness

A sacred secret that is not known by human reason but is only known by the revelation of God.