Paul continues to speak.

## be on guard. ##

"be awake and alert" or "watch out." (UDB) or "stay alert,"

## Remember ##

"Continue to remember" or "Do not forget."

## be on guard. Remember ##

These can be translated as 1) "be on guard and remember" or 2) "be on guard as you remember" or 3) "be on guard by remembering"

## for three years I did not stop instructing ##

Paul did not teach them continuously for three years, but over the space of three years. (See: [[rc://en/ta/man/translate/figs-hyperbole]])

## I did not stop instructing ##

Possible meanings 1) "I did not stop warning" or 2) "I did not stop encouraging with corrections."