'Vigorous' in the Bible

The midwives answered Pharaoh, “Because the Hebrew women are not like the Egyptian women; they are vigorous and give birth quickly and their babies are born before the midwife can get to them.”

Therefore, say to the children of Israel, ‘I am the Lord, and I will bring you out from under the burdens of the Egyptians, and I will free you from their bondage. I will redeem and rescue you with an outstretched (vigorous, powerful) arm and with great acts of judgment [against Egypt].