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holy cow

An exclamation of surprise, shock, or astonishment. Holy cow, the bill for that dinner is nearly $200! We won the lottery? Holy cow, that's amazing news!
See also: cow, holy

meek as Moses

old-fashioned Exceptionally patient, humble, and mild in manner or spirit. Despite his hulking, imposing appearance, the huge athlete is as meek as Moses when you speak to him in person.
See also: meek, Moses
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

holy cow

Also, holy mackerel or Moses or moly or smoke . An exclamation of surprise, astonishment, delight, or dismay, as in Holy cow, I forgot the wine, or Holy mackerel, you won! or Holy Moses, here comes the teacher! or Holy smoke, I didn't know you were here too. The oldest of these slangy expletives uses mackerel, dating from about 1800; the one with Moses dates from about 1850 and cow from about 1920. None has any literal significance, and moly is a neologism devised to rhyme with "holy" and possibly a euphemism for "Moses."
See also: cow, holy
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

meek as Moses (or a lamb)

very meek.
This expression is a biblical allusion to Numbers 12:3: ‘Now the man Moses was very meek’.
See also: meek, Moses
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
The Lord instructed Moses that preparations have to be made before Aaron, the priest, enters the sanctuary.
'As Newborn Unit staff, we named this miracle Baby Moses just like the biblical Moses who was found abandoned in a basket in a river.
It was only the beginning, for God had changes in mind, changes that were making Moses feel like Bilbo Baggins when Gandalf confronted him about an adventure in the book "The Hobbit."
Moses scored a point in their interchange when he explained, in so many words, that he needed a good calling card with which to approach the Israelites: "Would you please reveal a name that I can use to convince them?" Moses' tiny bit of willingness to serve opened the path for God to enter into a relationship with him that would leave Moses burning with more passion than the fiery bush with which God first lured him.
"Oh, Moses won't mind," the girl said, bending down to scratch Moses behind his ears.
But Moses was refused entry into the Promised Land as a punishment from God.
Board-certified by the American Academy of Orthopedic Surgeons, Moses began practicing orthopedic surgery in Norman in 2003.
Oxford-based biotechnology company Evox Therapeutics Ltd revealed on Thursday the addition of Dr Edwin Moses as its non-executive chairman.
Ross collapses while looking after Moses Elsewhere, Cain reminds Moira that Matty can't know the truth.
Moses produces pizza mist and presents it to Kitch.
Moses could careen between extremes in the same year.
Moses made it a practice to meet with God, and he did so away from distraction.
Prosecuting, James Wilson said turn to page 2 from page 1 when Ms Lamb had gone to bed, Moses decided to sleep downstairs, having become agitated.
Jeffrey Stackert's A Prophet Like Moses: Prophecy, Law, and Israelite Religion takes on Wellhausen's classic question of the relationship between prophecy and law in Israelite religion, a question whose answer is embodied in the character of Moses.
Described as the "Grand Old Man of German photography," Moses spent decades photographing Germans and Germany.