Source: Catholic News Agency By Hannah Brockhaus Vatican City, Feb 15, 2021 / 11:01 am MT (CNA).- Pope Francis has praised the courageous witness of the 21 Coptic Orthodox Christians killed by ISIS in 2015, calling them “saints of all Christians.” In a video message for the “Day of Contemporary Martyrs” Feb. 15, the pope said, “I hold in my heart that baptism of blood, those twenty-one men baptized as Christians with water and the Spirit.” “I thank God our Father because he gave us these courageous brothers. I thank the Holy Spirit because he gave them the strength and consistency…