'Fro' in the Bible

Among the living beings there was something that looked like burning coals of fire, like torches moving back and forth among the living beings. The fire was bright, and lightning was flashing from the fire.

And the living beings ran to and fro like bolts of lightning.

For the king of Babylon stood at the parting of the way, at the head of the two ways, to use divination: he shook the arrows to and fro, he consulted the teraphim, he looked in the liver.

For thus saith the Lord Jehovah: I will bring up a company against them, and will give them to be tossed to and fro and robbed.

Dan also and Javan going to and fro occupied in thy fairs: bright iron, cassia, and calamus, were in thy market.