'Willing' in the Bible

And a leper came to Him, and throwing himself at His feet, said, "Sir, if only you are willing you are able to cleanse me."

So Jesus put out His hand and touched him, and said, "I am willing: be cleansed." Instantly he was cleansed from his leprosy;

And (if you are willing to receive it)

and said, "What are you willing to give me if I betray him to you?" So they weighed out to him thirty shekels,

Keep awake, and pray that you may not enter into temptation: the spirit is right willing, but the body is frail."