How does the missionary activity of the church today relate to the purposes of God revealed in the old testament?

How does the missionary activity of the church today relate to the purposes of God revealed in the old testament? As you see God’s mission unfold in the old testament, is the role of the nation of Israel different from or the same as our responsibility in missions today? Not less than 250 words, must be according to turabian format, One citation from the bible at least.