'Add' in the Bible

Woe to those who add house to house and join field to field,Until there is no more room,So that you have to live alone in the midst of the land!

Woe, O Ariel, Ariel the city where David once camped!Add year to year, observe your feasts on schedule.

“Woe to the rebellious children,” declares the Lord,“Who execute a plan, but not Mine,And make an alliance, but not of My Spirit,In order to add sin to sin;

“Go and say to Hezekiah, ‘Thus says the Lord, the God of your father David, “I have heard your prayer, I have seen your tears; behold, I will add fifteen years to your life.