And [Gamaliel, a Pharisee,] said to them, "Men of Israel, take care what you are about to do with these men..."
Acts 5:35

Gamaliel's advice to let God decide the question of the Apostles' supposed heresy in Acts 5:35-39 isn't universally applicable. In some cases (idolatry, false prophets, etc.), God has already passed judgment and told us what to do. I suspect that Gamaliel was sympathetic to #yeshua and The Way. I wonder what he thought of Saul's overzealous activities.

Contrary to popular Christian belief, the Pharisees were always the more moderate and reasonable party among the first century Jewish leadership. Yeshua aligned quite closely with the Pharisees on many issues, while he rebuked them harshly on some.