If it is from God

Often the Sanhedrin, the judicial branch of the Jewish people, made statements that were more prophetic than they realize, I've spoken before about the statement that it would be better for one man to die for the good of the people but today comes to the apostles. Peter & John have been preaching in the Temple Courts, which you can imagine didn't go over very well with the Jewish leadership who haul them before the Sanhedrin and then put them in jail. But that's not where it ends, they get out after the divine intervention from God and then preach again.

And so the process begins again:
The apostles were brought in and made to appear before the Sanhedrin to be questioned by the high priest. 28 “We gave you strict orders not to teach in this name,” he said. “Yet you have filled Jerusalem with your teaching and are determined to make us guilty of this man’s blood.” (Acts 5:27-28 NIV)
Hauled in before the Sanhedrin they again reiterate that they'd told the disciples not to preach yet they continued to preach. They feel threatened by the Apostle's preaching which has now filled Jerusalem, they believe the apostles are making them guilty of killing Jesus, yet what the apostles make us realize is that we are ALL guilty of killing Jesus, we all sin and fall short of God's glory and have committed the sins that caused Jesus to be sacrificed for our sins.

But Peter also responds in much the same way:
Peter and the other apostles replied: “We must obey God rather than human beings! 30 The God of our ancestors raised Jesus from the dead—whom you killed by hanging him on a cross. 31 God exalted him to his own right hand as Prince and Savior that he might bring Israel to repentance and forgive their sins. 32 We are witnesses of these things, and so is the Holy Spirit, whom God has given to those who obey him.” (Acts 5:29-32 NIV)
The Apostles are consistent again as they again say that they must obey God, it was the same way they responded when they first brought in, they are just speaking about what they have seen and heard, God is a higher authority than even the Sanhedrin and so they must obey him instead. Beyond that they now claim to have the Holy Spirit which until Acts had only been on individuals for set times, now has come on anyone who puts their faith in Christ.

And that is the final straw for the Sanhedrin:
When they heard this, they were furious and wanted to put them to death. 34 But a Pharisee named Gamaliel, a teacher of the law, who was honored by all the people, stood up in the Sanhedrin and ordered that the men be put outside for a little while. 35 Then he addressed the Sanhedrin: “Men of Israel, consider carefully what you intend to do to these men. 36 Some time ago Theudas appeared, claiming to be somebody, and about four hundred men rallied to him. He was killed, all his followers were dispersed, and it all came to nothing. 37 After him, Judas the Galilean appeared in the days of the census and led a band of people in revolt. He too was killed, and all his followers were scattered. 38 Therefore, in the present case I advise you: Leave these men alone! Let them go! For if their purpose or activity is of human origin, it will fail. 39 But if it is from God, you will not be able to stop these men; you will only find yourselves fighting against God.” (Acts 5:33-39 NIV)
They are so angered by that assertion that they decide they'd like to put the apostles to death for claiming something like that. But then Gamaliel does something unexpected, he suggests letting them preach and his wisdom is very Godly. While he disagrees with the apostles he leaves open the possibility that they may be right because God has worked in unexpected ways in the past, so he allows that this could be it. Gamaliel knows his history he has seen people come and go and as such he knows that if this is along those lines it will fail but if it is from God they should not fight against it because they'd be fighting against God.

I think too often we try to fight against God, we hear things that we don't like instead of trying to examine them we just yell against it. What we should do when we hear things we don't like, examine them against the Bible and what God actually says.