“And now I say to you, keep away from these men and let them alone; for if this plan or this work is of men, it will come to nothing; but if it is of God, you cannot overthrow it—lest you even be found to fight against God.”” Acts 5:38-39 NKJV
The words in v38-39 were the supposedly wise counsel of Gamelial – the teacher of the Apostle Paul. The Gospel preached by the Apostles was experiencing great reception by the people.
Gamelial’s reasoning is that if some teaching withstood the test of time, it was authentic and definitely the work of God. He based this reasoning on the previous movements that stopped over time.
Based on that reasoning, Christianity would be considered real since it withstood the test of time. However, on the same basis, other religions would also be considered real since they too withstood the test of time. Therefore, we cannot consider Gamelial’s reasoning to be sound. Instead, every thing should be tested against God’s word. That alone is the standard of truth. Nothing else is a reliable measure.