Rev Aijaz Basharat 

Father Son and Holy spirit 
The Father is eternal, the Son is eternal, the Spirit is eternal — eternal as in “from everlasting, to everlasting”, timeless, no beginning and no end. They have always existed. The Father did not create the Son nor split into three persons, as that would imply a time when the Son or the Spirit did not exist. The Son and the Spirit have always existed.
The creation conventionally has a beginning, so God was in existence (already) at the beginning of the universe. But God does not begin at the beginning of the universe, for that is simply the beginning of created things, not the beginning of God.
God has always been three persons, since forever: without beginning, without end.