This text comes from The Canadian Soldiers' Song Book, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
When I fear my faith will fail,
Christ can hold me fast;
When the tempter would prevail,
He can hold me fast.
He will hold me fast,
He will hold me fast;
For my Saviour loves me so,
He will hold me fast.
I could never keep my hold,
He must hold me fast:
For my love is often cold,
He must hold me fast.
I am precious in His sight,
He will hold me fast;
Those He saves are His delight,
He will hold me fast.
He'll not let my soul be lost,
Christ will hold me fast;
Bought by Him at such a cost,
He will hold me fast.