Matthew 26:41
Watch and pray that you may not enter into temptation. The spirit indeed is willing, but the flesh is weak. The watch-and-pray command paired with the spirit-is-willing-but-flesh-is-weak observation is the honest assessment of the disciples' condition. The spirit willing and the flesh weak is not an excuse but an explanation — and the answer to the weakness of the flesh is the watch-and-pray that the disciples have just failed to do.