Gabriel appeared to several biblical figures, including Daniel, Zechariah, and Mary. When Gabriel appeared to Mary, he told her she would conceive and give birth to a son named Jesus, who would be the Son of God and reign forever. Mary was initially troubled by this message but said she was God's servant and would submit to his word. Gabriel's visits and Mary's obedience were meant to fulfill God's plan of salvation through Jesus' birth. Believers are called not to let these events be in vain by honoring God with authentic worship, walking with brokenness before him, and working courageously for him.