Why are angels called sons of God if they are not adopted or regenerated?

Angels are referred to as sons of God primarily due to their creation by Him and their roles as His messengers and servants. They embody the traits of honoring and obeying God, akin to how sons honor their fathers. Unlike believers who are adopted into God’s family through regeneration (as seen in John 1:12-13), angels maintain their original righteousness and have never fallen from grace. Therefore, their sonship is derived from their creation and faithful service, depicting a relationship that emphasizes reverence and duty rather than familial adoption. They are depicted as near to God, engaging actively in His will and reflecting His character in their actions.