Psalm 39:2-4

New Catholic Bible

² I said, “I will be careful of my behavior
    so as not to sin with my tongue.
I will keep a muzzle on my mouth^[a]
    whenever the wicked are in my presence.”
³ I kept completely silent
    and refrained from speech,
    but my distress only increased.
⁴ My heart^[b] smoldered within me,
    and, as I pondered, my mind was inflamed,
    and my tongue began to speak: