'Warning' in the Bible

They said, “Cornelius, a centurion, an upright and God-fearing man well spoken of by all the Jewish people, was divinely instructed by a holy angel to send for you to come to his house and hear what you have to say.”

strengthening and establishing the hearts of the disciples; encouraging them to remain firm in the faith, saying, “It is through many tribulations and hardships that we must enter the kingdom of God.”