'Necessary' in the Bible

"Brothers, it was necessary that this Scripture should be fulfilled, which the Holy Spirit spoke before by the mouth of David concerning Judas, who was guide to those who took Jesus.

Paul and Barnabas spoke out boldly, and said, "It was necessary that God's word should be spoken to you first. Since indeed you thrust it from you, and judge yourselves unworthy of eternal life, behold, we turn to the Gentiles.

But some of the sect of the Pharisees who believed rose up, saying, "It is necessary to circumcise them, and to command them to keep the law of Moses."

For it seemed good to the Holy Spirit, and to us, to lay no greater burden on you than these necessary things: