'Possibly' in the Bible

So Sarai told Abram, "You are well aware that the LORD has prevented me from giving birth to a child. Go have sex with my servant, so that I may possibly bear a son through her."

Her leaders judge for the money, her priests teach only when they're paid, and her prophets prophesy for cash. Even so, don't they all rely on the LORD as they ask, "The LORD is among us, is he not? Nothing bad can possibly happen to us!'

"Come, see a man who told me everything I've ever done! Could he possibly be the Messiah?"