'Mouth of the Lord' in the Bible

At the mouth of the LORD the children of Israel journeyed, and at the mouth of the LORD they pitched. And as long as the cloud abode upon the habitation, they lay still,

If it chanced that the cloud abode any space of time upon the habitation, then they kept their tents at the mouth of the LORD: and they journeyed also at the commandment of the LORD.

At the mouth of the LORD they rested, and at the commandment of the LORD they journeyed. And thus they kept the watch of the LORD, at the commandment of the LORD by the hand of Moses.

And the first took their journey at the mouth of the LORD, by the hand of Moses:

'If Balak would give me his house full of silver and gold, I cannot pass the mouth of the LORD, to do either good or bad of mine own mind. What the LORD sayeth, that must I speak.'

And Moses commanded the children of Israel at the mouth of the LORD, saying, "The tribe of the children of Joseph have said well.