29 But I must remind you also of a few other testimonies in like manner concerning the Son's sitting at the right hand of the Father. For in the Gospel according to Matthew it is written, Nevertheless, I say unto you, Henceforth you shall see the Son of Man sitting on the right hand of power, and the rest: in accordance with which the Apostle Peter also writes, By the Resurrection of Jesus Christ, who is on the right hand of God, having gone into heaven. And the Apostle Paul, writing to the Romans, says, It is Christ that died, yea rather, that is risen again, who is even at the right hand of God. And charging the Ephesians, he thus speaks, According to the working of His mighty power, which He wrought in Christ when He raised Him from the dead, and set Him at His own right hand; and the rest.
And the Colossians he taught thus, If you then be risen with Christ, seek the things above, where Christ is seated at the right hand of God. And in the Epistle to the Hebrews he says, When He had made purification of our sins, He sat down on the right hand of the Majesty on high. And again, But unto which of the Angels has He said at any time, Sit thou at My right hand, until I make your enemies your footstool? And again, But He, when He had offered one sacrifice for all men, for ever sat down on the right hand of God; from henceforth expecting till His enemies be made His footstool. And again, Looking unto Jesus, the author and perfecter of our faith; Who for the joy that was set before Him endured the Cross, despising shame, and is set down on the right hand of the throne of God.
Source: Catechetical Lectures (New Advent)