This text comes from The Complete Poetical Works of John Greenleaf Whittier, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
The Rabbi Ishmael, with the woe and sin
Of the world heavy upon him, entering in
The Holy of Holies, saw an awful Face
With terrible splendor filling all the place.
“O Ishmael Ben Elisha!” said a voice,
“What seekest thou? What blessing is thy choice?”
And, knowing that he stood before the Lord,
Within the shadow of the cherubim,
Wide-winged between the blinding light and him,
He bowed himself, and uttered not a word,
But in the silence of his soul was prayer:
“O Thou Eternal! I am one of all,
And nothing ask that others may not share.
Thou art almighty; we are weak and small,
And yet Thy children: let Thy mercy spare!”
Trembling, he raised his eyes, and in the place
Of the insufferable glory, lo! a face
Of more than mortal tenderness, that bent
Graciously down in token of assent,
And, smiling, vanished! With strange joy elate,
The wondering Rabbi sought the temple’s gate.
Radiant as Moses from the Mount, he stood
And cried aloud unto the multitude:
“O Israel, hear! The Lord our God is good!
Mine eyes have seen His glory and His grace;
Beyond His judgments shall His love endure;
The mercy of the All Merciful is sure!”