I notice you conveneintly left out this part.
I believe in one Lord Jesus Christ,
the Only Begotten Son of God,
born of the Father before all ages.
God from God, Light from Light,
true God from true God,
I didn't leave it out. I posted it. I said the word translated "from" is "ek". It means to come out of. They believe that God came out of God. What do they mean by that?
I believe in one God,
The Father almighty,
Maker of heaven and earth,
Of all things visible and invisible.
I believe in one Lord Jesus Christ,
The Only Begotten Son of God,
Born of the Father before all ages.
God from God, Light from Light,
True God from true God,
Begotten, not made,
consubstantial with the Father;
consubstantial means of the same essence. So what they mean by God out of God is whatever the essence of the Father is the Son is also that same essense. That makes perfect sense if He came out of God. The fact that they say He came out of God proves He's completely separate. It shows a distinction where the Trinity doctrine claims they are one. That Jesus was the essense as God can be seen in Scripture.
Philippians 2:5–8 (ESV): 5 Have this mind among yourselves, which is yours in Christ Jesus, 6 who,
though he was in the form of God, did not count equality with God a thing to be grasped, 7 but
emptied himself, by taking the form of a servant, being born in the likeness of men. 8 And being found in human form, he humbled himself by becoming obedient to the point of death, even death on a cross.
Paul says, Jesus was in the form of God and emptied Himself. So, yeah, He was if the same essence as the Father.