Exodus 19:4-6 New International Version (NIV)
4 ‘You yourselves have seen what I did to Egypt, and how I carried you on eagles’ wings and brought you to myself. 5 Now if you obey me fully and keep my covenant, then out of all nations you will be my treasured possession. Although the whole earth is mine, 6 you will be for me a kingdom of priests and a holy nation.’ These are the words you are to speak to the Israelites.”
God has a reason for everything he does. He had a reason for rescuing the Israelites from slavery. He was now ready to tell them. Israel was to become a kingdom of priests and a holy nation where anyone could approach God freely. Israel would represent God to the rest of the world. Then through obedience and disobedience, the plan God had extended through Jesus Christ, who never sinned and is the Son of God. God has made a way for all believers. You are to become a holy royal priest. You are a work in progress. The death and resurrection of Christ allows you to approach God freely.