65 - God was ready to receive Israel back, but she continued in her idolatry. God will redeem a remnant, and create a new heavens and earth where labor will be rewarded, God will answer His people readily, and life will be long and glad.
66 - God looks on the one who trembles at His Word, not the one who offers all the right sacrifices with his heart somewhere else. Rejoice with Jerusalem, for she has given birth to a nation overnight. God will destroy the wicked in Israel, bring the nations to worship Him, and make the new creation abide before Him, worshiping Him, forever.