The concept of "angel numbers" is not explicitly mentioned in the Bible, but the Bible does contain many instances of angels delivering messages to humans, often in the form of numbers or symbolic representations.
For example, in the book of Revelation, the 1254 angel number twin flame is used frequently as a symbol of completeness or perfection, and the number 12 is used to represent the 12 tribes of Israel or the 12 apostles. In the Old Testament, the 1212 angel number death is often used to represent a period of testing or trial, such as the 40 days and 40 nights of rain during the flood in Genesis.