Jeremiah 46:28 Fear thou not, O Jacob my servant, Saith the LORD: for I am with thee; For I will make a full end of all the nations whither I have driven thee: But I will not make a full end of thee, But correct thee in measure; Yet will I not leave thee wholly unpunished.
God is going to destroy all the nations around Israel and Judah. He will be bringing horrible destruction even on His own people but they can be confident of the fact that He will not finish them off. He will bring them back to their land. He will destroy those that mistreat His people.
His only goal with Israel is to correct them. He will punish them but He will not completely destroy them.
God is at work among the Jews. We can count on their return to their land and their future blessings of God. He keeps His word. He will keep His word with us also. You can know that when He said everlasting life He meant just that.