This text comes from The Poetical Works of Robert Burns, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Thou, who thy honour as thy God rever'st,
Who, save thy mind's reproach, nought earthly fear'st,
To thee this votive offering I impart,
The tearful tribute of a broken heart.
The friend thou valued'st, I, the Patron, lov'd;
His worth, his honour, all the world approv'd.
We'll mourn till we too go as he has gone,
And tread the dreary path to that dark world unknown.