'Beside' in the Bible

He who overcomes [the world through believing that Jesus is the Son of God], I will grant to him [the privilege] to sit beside Me on My throne, as I also overcame and sat down beside My Father on His throne.

Then I saw something like a sea or large expanse of glass mixed with fire, and those who were victorious over the beast and over his image and over the number corresponding to his name were standing on the sea or large expanse of glass, holding harps of God [worshiping Him].