'Perhaps' in the Bible

So Sarai said to Abram, "Since the Lord has prevented me from having children, have sexual relations with my servant. Perhaps I can have a family by her." Abram did what Sarai told him.

But Rebekah's brother and her mother replied, "Let the girl stay with us a few more days, perhaps ten. Then she can go."

You must also say, 'In fact your servant Jacob is behind us.'" Jacob thought, "I will first appease him by sending a gift ahead of me. After that I will meet him. Perhaps he will accept me."

Take double the money with you; you must take back the money that was returned in the mouths of your sacks -- perhaps it was an oversight.