1 Samuel 1:12 in the King James Version
And it came to pass, as she continued praying before the LORD, that Eli marked her mouth.
Context
11 She vowed a vow, and said, “LORD of Armies, if you will indeed look at the affliction of your servant and remember me, and not forget your servant, but will give to your servant a boy, then I will give him to the LORD all the days of his life, and no razor shall come on his head.”
12 As she continued praying before the LORD, Eli saw her mouth.
13 Now Hannah spoke in her heart. Only her lips moved, but her voice was not heard. Therefore Eli thought she was drunk.