“If they will not listen to Moses and the prophets, neither will they be persuaded if someone should rise from the dead.” (Luke 16:31)

Perhaps for this reason, the chief priests tried to make up a lie in order to deny the truth of Jesus’ resurrection:

“While they were going, some of the guard went into the city and told the chief priests all that had happened.
They assembled with the elders and took counsel; then they gave a large sum of money to the soldiers, telling them, "You are to say, 'His disciples came by night and stole him while we were asleep.'
And if this gets to the ears of the governor, we will satisfy (him) and keep you out of trouble."
The soldiers took the money and did as they were instructed. And this story has circulated among the Jews to the present (day).
(Matthew 28:11-15)

On the contrary, the centurion who was the only one without faith said (most of them were not Jews), “Truly, this was the Son of God!” (Matthew 27:54)

No wonder Jesus reminded the people to not follow the example of the scribes:

“The scribes and the Pharisees have taken their seat on the chair of Moses. Therefore, do and observe all things whatsoever they tell you, but do not follow their example. For they preach but they do not practice.” (Matthew 23:2-3)

During his missionary work in Rome, Peter wrote a pastoral letter to refute the false teachers:

“There were also false prophets among the people, just as there will be false teachers among you, who will introduce destructive heresies and even deny the Master who ransomed them, bringing swift destruction on themselves.
Many will follow their licentious ways, and because of them the way of truth will be reviled. In their greed they will exploit you with fabrications, but from of old their condemnation has not been idle and their destruction does not sleep.” (2 Peter 2:1-3)

This is also true for today as if we lack faith in our lives, our evangelization will be nothing more than empty talk.