Paul speaks of people ceasing to trust in Christ as if they were physically leaving a place or an object. AT: "stop trusting in Jesus" (See: [[rc://en/ta/man/translate/figs-metaphor]])
# and pay attention
"and give attention" or "because they are paying attention"
Possible meanings are 1) Paul is speaking of people who can no longer tell that they are doing wrong as if their minds are ruined like skin that someone has burned with a hot iron or 2) Paul is speaking of these people as if Satan had put a mark on these people with a hot iron to indicate that they belong to him. (See: [[rc://en/ta/man/translate/figs-metaphor]])