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.
Champion of those who groan beneath
Oppression’s iron hand:
In view of penury, hate, and death,
I see thee fearless stand.
Still bearing up thy lofty brow,
In the steadfast strength of truth,
In manhood sealing well the vow
And promise of thy youth.
Go on, for thou hast chosen well;
On in the strength of God!
Long as one human heart shall swell
Beneath the tyrant’s rod.
Speak in a slumbering nation’s ear,
As thou hast ever spoken,
Until the dead in sin shall hear,
The fetter’s link be broken!
I love thee with a brother’s love,
I feel my pulses thrill,
To mark thy spirit soar above
The cloud of human ill.
My heart hath leaped to answer thine,
And echo back thy words,
As leaps the warrior’s at the shine
And flash of kindred swords!
They tell me thou art rash and vain,
A searcher after fame;
That thou art striving but to gain
A long-enduring name;
That thou hast nerved the Afric’s hand
And steeled the Afric’s heart,
To shake aloft his vengeful brand,
And rend his chain apart.
Have I not known thee well, and read
Thy mighty purpose long?
And watched the trials which have made
Thy human spirit strong?
And shall the slanderer’s demon breath
Avail with one like me,
To dim the sunshine of my faith
And earnest trust in thee?
Go on, the dagger’s point may glare
Amid thy pathway’s gloom;
The fate which sternly threatens there
Is glorious martyrdom!
Then onward with a martyr’s zeal;
And wait thy sure reward
When man to man no more shall kneel,
And God alone be Lord!