From Tafseer Ibn Katheer:
Explanation of Suratul Asr
'1-Ash Shafii said that if people were to ponder on this Surah (Suratul Asr) it would be sufficient for them.
Al Asr is the Time in which the movements of the Children of Adam occur. whether good or evil.
2-Allah swears by this that man is in loss and destruction.
3-So Allah makes an exception, among the species of Man being in loss, for those who believe in their hearts and work righteous deeds with their limbs. They perform acts of obedience and avoid forbidden things.'
And while commanding others to do good deeds and to avoid evil they recommend each other to be patient as everyone is not going to take what they say and some may even harm them.
All praise and thanks are due to Allah.