'Add' in the Bible

Woe (judgment is coming) to Ariel, to Ariel, the city where David [once] camped!Add yet another year; let the feasts run their course [but only one year more].

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