The Holy Spirit worked through the Council of Nicaea to proclaim the truth of Holy Scripture: that Jesus is homoousios with the God the Father, that is of the same substance. Those who taught that Jesus was only similar to God the Father were condemned as false teachers.
Homoousios; NOT Homoiousios
The entire second article of the Nicene Creed has led up to this word homoousios: of the same substance.
Because Jesus is God, you have a Savior:
1. He lived a holy and righteous life for you and in your place
2. He took your sins upon Himself and suffered and died on a cross for you
3. and He rose from the dead on the Third Day, guaranteeing that you too
will rise from the dead on the Last Day.
Amen!