whistling
Judges Chapter 5:16
Why abodest thou among the sheepfolds, to hear the bleatings of the flocks? For the divisions of Reuben there were great searchings of heart.
Isaiah Chapter 5:26
And he will lift up an ensign to the nations from far, and will hiss unto them from the end of the earth: and, behold, they shall come with speed swiftly:
Isaiah Chapter 7:18
And it shall come to pass in that day, that the LORD shall hiss for the fly that is in the uttermost part of the rivers of Egypt, and for the bee that is in the land of Assyria.
Zechariah Chapter 10:8
I will hiss for them, and gather them; for I have redeemed them: and they shall increase as they have increased.