'O God' in the Bible

She gave birth to a son--a male child, destined before long to rule all nations with an iron scepter. But her child was caught up to God and His throne,

These are those who had not defiled themselves with women: they are as pure as virgins. They follow the Lamb wherever He goes. They have been redeemed from among men, as firstfruits to God and to the Lamb.

And I saw what seemed to be a sea of glass mingled with fire, and those who had gained the victory over the Wild Beast and over his statue and the number of his name, standing by the sea of glass and having harps which belonged to God.

Blessed and holy are those who share in the First Resurrection. The Second Death has no power over them, but they shall be priests to God and to Christ, and shall be kings with Christ for the thousand years.