Judges 11:35

35And as soon as he saw her, he tore his clothes and said, “Alas, my daughter! You have brought me very low, and you have become the cause of great trouble to me. For I have opened my mouth to the Lord, aand I cannot take back my vow.”

Psalms 78:2

2 bI will open my mouth cin a parable;
I will utter dark sayings from of old,

Proverbs 24:7

7Wisdom is dtoo high for a fool;
in ethe gate he does not open his mouth.

Proverbs 31:8-9

8 fOpen your mouth for the mute,
for the rights of all who are destitute.
Hebrew  are sons of passing away

9Open your mouth, hjudge righteously,
idefend the rights of jthe poor and needy.

Proverbs 31:26

26She opens her mouth with wisdom,
and the teaching of kindness is on her tongue.
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