Anciently Israel was called to assembly by the blowing of trumpets such as on Holy Days. The rams horn or shophar was blown to sound a warning whenever the Israelites were in eminent danger. Anciently the prophets sounded a "trumpet warning" from God to turn them away from their sinful ways. In modern times God sets His ministry as a watchman to warn His church. All would be wise to heed that "trumpet" warning pictured in type by the Feast of Trumpets.