In Islam, there is a concept called Istiqaamat. It is actually directly from the Qur'an. The Qur'an says:
Wa Lidhaalika Fastaqim Kamaa Umirta!
"And that is why stand firm, and be steadfast, as you have been told to do."
Without the will to stay put, and without the commitment to go on while no one else would appear to, is the essence of Istiqaamat.
In Badr, Istiqaamat carried the day for Muslims.
In Uhad, Istiqaamat of a critical group of Muslims faltered and the day was lost.
The lesson continues to our day. And it will continue for as long as the world lasts.
Wa Laa Tajidu Li-Sunnatillahi Tabdeelaa!
"Allah's ways do not change."
Simple to understand. Allah works from Eternity to Eternity. Allah's work is not controlled by a calendar or a clock on the wall!