1 Be Thou, O God, by night, by day,
My guard, my guide from sin,
My life, my trust, my light divine,
To keep me pure within.

2 Pure as the air, when day's first light
A cloudless sky illumes,
And active as the lark that soars
Till heaven shines round its plumes.

3 So may my soul, upon the wings
Of faith, unwearied rise,
Till at the gate of heaven it sings,
'Midst light from Paradise.