What is the meaning of: "They sin hoping for repentance?"

The context of the phrase has not been clarified, but it may refer to those who sin and procrastinate repentance, thinking that they will be able to do so later. This is dangerous because death may surprise them before repentance, and a bad ending is feared for them. Procrastinating repentance is a sin in itself, and sins generate one another. The heart of the procrastinator may be sealed, making him unable to repent. The duty is to hasten sincere repentance immediately.