I am using the verb gennao of Ac 13:33 the same way it is used in Mt 1:20, above.
The word is often use in regard to birth or conception. God did not give birth to Jesus. You see this word uses in a different form repeatedly in Matt 1 in the genealogical record of Jesus. In that entire genealogical record, every name that is mentioned is someone who did not exist prior to his conception. This cannot be said of Jesus. True, Mary did give birth to Jesus but Jesus as an eternal being is not the offspring of God. He did not begin at conception. This is not the way Paul is using this word in Acts 13. Here is his relaying a concept of preeminence and he is limiting it here to his resurrection, NOT to his physical birth. meaning has to be understood from its use in a given context.