'Willing' in the Bible

but after telling them goodbye and saying, “I will return again if God is willing,” he set sail from Ephesus.

But Festus, wishing to do the Jews a favor, answered Paul, “Are you willing to go up to Jerusalem and stand trial there in my presence [before the Jewish Sanhedrin] on these charges?”

And I, being at a loss as to how to investigate these things, asked whether he was willing to go to Jerusalem and be tried there regarding these matters.

They have known me for a long time, if they are willing to testify to it, that according to the strictest sect of our religion, I have lived as a Pharisee.