Psalm 71:15 (KJV)
My mouth shall shew forth thy righteousness and thy salvation all the day; for I know not the numbers thereof.

In ceaseless strains the tongue shall raise,
Thy righteousness in endless praise;
Thy saving grace, from dawn till night,
Shall flood the lips with holy light.

O boundless sea of mercy deep,
Where countless waves in glory sweep;
The voice, though small, in faith stands tall,
Proclaims the wonders of it all.

For who can number, who can tell,
The deeds of Him who doeth well?
Thy justice shines like morning’s ray,
Thy salvation turns the darkest day.

Through every hour, in joy or pain,
The heart shall sing the sweet refrain;
Thy righteousness, Thy saving power,
Eternal themes from hour to hour.

Though mortal mind cannot contain
The vastness of Thy vast domain,
Yet still the mouth shall ever show
The glories only angels know.

Thus let the soul in praises live,
And in devotion ever give;
Till heaven’s choir in triumph rings,
And endless hallelujah sings.