God punished Israel for failing to keep their promises to God. How long did he punish them for?

The people would serve the King of Babylon for Seventy years.

Source: Jeremiah 25:8-12

Samuel anointed David as king when he was a young man. How old was David when he began to reign as King?

King David began to reign when he was Thirty. He waited many years for God’s promise to be fulfilled.

Source: 2^nd Samuel 5:4-5

In Isiah God promised that those who wait on God will not be what?

God promises that those who wait on him will not be ashamed.

Source: Isiah 49:23