English Standard Version
As they say, the bonus of not lying is that you don't have to remember all the lies you told in order to avoid getting in trouble later. Start with the truth and stick to it, and it makes it easier.
Jesus is warning the people to avoid the leaven of the Pharisees -- think about how yeast impacts bread. It can take a long time, and for a few minutes you may even wonder if there's anything in there, but eventually it will show the effect. You can't hide the impact.
So if we consistently live with integrity, then we don't need to fear. Trust that everything will be brought into the light. We worry sometimes if criminals will get caught. They will, in time. Do the right thing, day after day, and trust in God. Things will take care of themselves.