Why are angels referred to as watchers in the Bible?

The term 'watcher' implies vigilance and a charge to observe and protect. Angels, referred to as watchers in the biblical text, are depicted as being constantly alert and engaged in God’s work on Earth (Daniel 4:13). This role includes the protection of believers, the execution of judgment against the wicked, and the communication of divine messages. Through their surveillance, angels provide both warning of impending dangers and assurance of God's ongoing care for His people, ensuring their spiritual safety and delivering them from various perils.