In Hebrews 1 v: 7, 8 God refers his Son as God and he has a throne that will last forever and ever. When Jesus Christ said" I and the Father are one. He meant it so that we may know there is one true God.
Please read these 2 verses for yourself
7In speaking of the angels he says,
“He makes his angels spirits,
and his servants flames of fire.” d
8But about the Son he says,
“Your throne, O God, will last for ever and ever;
a scepter of justice will be the scepter of your kingdom.