'Back' in the Bible

O Lord, what can I say since Israel has turned their back before their enemies?

When the men of Ai turned back and looked, behold, the smoke of the city ascended to the sky, and they had no place to flee this way or that, for the people who had been fleeing to the wilderness turned against the pursuers.

When Joshua and all Israel saw that the men in ambush had captured the city and that the smoke of the city ascended, they turned back and slew the men of Ai.

Then Joshua turned back at that time, and captured Hazor and struck its king with the sword; for Hazor formerly was the head of all these kingdoms.

I was forty years old when Moses the servant of the Lord sent me from Kadesh-barnea to spy out the land, and I brought word back to him as it was in my heart.

Then Phinehas the son of Eleazar the priest and the leaders returned from the sons of Reuben and from the sons of Gad, from the land of Gilead to the land of Canaan, to the sons of Israel, and brought back word to them.

For if you ever go back and cling to the rest of these nations, these which remain among you, and intermarry with them, so that you associate with them and they with you,