(a) Jesus warned his disciples to be vigilant and to pray continually to avoid falling into temptation, highlighting their tendency to be overconfident despite their good intentions.
(b) The disciples succumbed to human weakness because they underestimated their vulnerability and failed to stay spiritually alert, leading them to abandon Jesus when He needed them most.
This serves as a reminder for us to remain humble and rely on prayer to strengthen us against temptation.