“Baptism . . . signifies union with Christ, purifying from the pollution of sin by regeneration of the Spirit, and purifying from the guilt of sin by the blood of Christ. . . . The sign and seal of baptism can be no pledge or guarantee to us of that which baptism signifies except as we are mindful of God’s covenant, embrace its promises, discharge its obligations, and lay hold in faith upon the covenant faithfulness of God.” (John Murray, Christian Baptism, pp. 89-91).
Quote used in the Reflection for Trinity Presbyterian Church, OPC–looking at the bronze basin which God had Moses build for the Tabernacle.