A martyr is literally a ‘witness’. Part of the function of an altar is to serve as a witness to our covenant with God, and so it is fitting that their relics are involved in its consecration.
The certificate in the background is the guarantee of their authenticity.
“In the year of Our Lord 2020, on the fourteenth day of the month of August, I, Robert, Bishop of the Diocese of Hexham and Newcastle, consecrated this altar, in honour of the Most Sacred Heart of Our Lord Jesus Christ and enclosed in it the relics of the holy Martyrs Pope Fabian and Sebastian.”
O Lord God Almighty, before whom the host of Angels stands with trembling, they whose service is known to be spiritual and with fire, deign to look down and bless this creature of incense, that, perceiving its fragrance, all weakness and all infirmities, and the snares of the enemy may flee, and be removed from your image, which you have redeemed with the precious Blood of your Son, that it may never be wounded by the bite of the wicked serpent. Through the same Christ our Lord. Amen.
Almighty, ever-living God, creator and preserver of the human race, giver of spiritual grace, and bestower of eternal salvation, send your Holy Spirit upon this water mixed with wine, salt and ash; that, armed with the power of heaven for our defence, it may bring about the consecration of this altar. Through Christ our Lord. Amen.
Images and text: Oxford Oratory