The prophet Isaiah sets forth in poetic fashion the efficacy of the Word of God.

Verses 6-9 of Isaiah 55 give us a clear direction as to how we are to set up a meeting between a sinner and the Savior in our preaching and in our witness.

In verses 4 and 5 of Isaiah 55 the Church's message to a needy world becomes more explicit.

Believers are to be confident messengers of God as they invite the world to the Great Banquet.

In Isaiah 55 the prophet Isaiah is prophesying and predicting the mission of the Christian church to the world.

Isaiah 54 speaks of a key transition in terms of God's dealings with his people resulting in their transformation.