Act_3:19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;
A time of refreshing is coming from the LORD. It was prophesied long ago by God’s prophets. It will come upon all the earth when the Kingdom of God appears, first for a thousand years and then on into eternity with a New Heaven and New Earth. The Jews were not wrong to expect an earthly Kingdom, for it had been promised to them, but they forgot about the spiritual nature of the Kingdom. They supposed that entrance into it could be based on being physical sons of Abraham. Instead, repentance is required to enter the Kingdom of God.