[verga]

Let's try the classical Christian answer: Given the proviso that you accept that a universal highest power exists according to the Thomist view God is the un-created, first moving necessary being. He lives outside of time and space. So technically the terms before and after having no bearing on the origin of the Son.
Gods first thought was of Himself and that thought was so powerful and perfect that it resulted in the Son. Not as a created being, but rather as a reflection of the Father with all of His divinity. Since the Father already existed the Son's first thought was of Him This first thought was of the perfect love He had for the Father. The Father also immediately had a perfect love for the Son. This love resulted in the third person was the Holy Spirit.
I hope this answers your question.

[Elsie]

Gods first thought was of Himself and that thought was so powerful and perfect that it resulted in the Son.

I am just AMAZED!

WHERE do you come UP with this stuff?

[ealgeone]

Gods first thought was of Himself and that thought was so powerful and perfect that it resulted in the Son.

Your statement implies that the Son was created.

However, John 1:1 tells us:

In the beginning was the Word, and the Word was with God, and the Word was God. John 1:1 NASB

The Son has always existed as has the Father and Holy Spirit.

Neither the Son nor the Holy Spirit were created.