lest Satan should get an advantage of us: for we are not ignorant of his devices.
To keep Satan from getting the advantage over us; for we are not ignorant of his wiles and intentions.
that no advantage may be gained over us by Satan: for we are not ignorant of his devices.
This is so that we won’t be taken advantage of by Satan, because we are well aware of his schemes.
so that we would not be circumvented by Satan. For we are not ignorant of his intentions.
That we be not overreached by Satan. For we are not ignorant of his devices.