I will watch my ways and keep my tongue from sin; I will put a muzzle on my mouth as long as the wicked are in my presence.@Psalm 39:1
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François H. Barthélémon (1741-1808)

Isaac Watts, The Psalms of David 1719.

Ballerma François H. Barthélémon (1741-1808), adapted by Robert Simpson in A Selection of Original Sacred Music, 1833 (🔊 pdf nwc).

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Isaac Watts (1674-1748)

Thus I resolved before the Lord,
Now will I watch my tongue;
Lest I let slip one sinful word,
Or do my neighbor wrong.

And if I’m e’er constrained to stay
With men of lives profane,
I’ll set a double guard that day,
Nor let my talk be vain.

I’ll scarce allow my lips to speak
The pious thoughts I feel,
Lest scoffers should th’occasion take
To mock my holy zeal.

Yet if some proper hour appear,
I’ll not be overawed,
But let the scoffing sinners hear
That I can speak for God.