O God of Mercy Hear My Call { O God of Mercy Hear My Call BARBY-William Tans'ur O God of Mercy! Hear My Call } O God of mercy! hear my call, My load of guilt remove; Break down this separating wall, That bars me from thy love. Give me the presence of thy grace; Then my rejoicing tongue Shall speak aloud thy righteousness, And make thy praise my song. No blood of goats, nor heifer slain, For sin could e'er atone: The death of Christ shall still remain Sufficient and alone. A soul, oppressed with sin's desert, My God will ne'er despise; An humble groan, a broken heart, Is our best sacrifice.