Tawbah and Time Tenses
To sin is a verb or an act or action. Therefore it has three time tenses, i.e. past, present, and future. So when we repent and seek forgiveness, we should do so with these three time tenses in mind. We should repent for all of our sins, the ones in the past, past, present, and future. Everyone understands why we would repent for past sins, but why the present and the future? We should repent for the present because we lack the sincerity that Allah deserves even while presently repenting. We should repent for the future we are human and are prone to sin. So perhaps by acknowledging our weakness and hoping in His mercy, He will forgive us in the future, or even better, facilitate for us not to sin, and if by chance we do, then He allows us the opportunity to repent and ask for forgiveness. One of the scariest consequences of sin is that the sinner is deprived from repentance.