'Heavily' in the Bible

for made gross was the heart of this people, and with the ears they heard heavily, and their eyes they did close, lest they might see with the eyes, and with the ears might hear, and with the heart understand, and turn back, and I might heal them.

for made gross was the heart of this people, and with the ears they heard heavily, and their eyes they did close, lest they may see with the eyes, and with the heart may understand, and be turned back, and I may heal them.