God promises total forgiveness and the gift of His Spirit, and we promise total commitment to follow Him for the rest of our lives.
We must be totally committed, no matter what comes as a result.
The reward of the firstfruits of the Kingdom is so great, because it is such a narrow and difficult way for those who follow God's call, and are placed in God's church by God. Following Christ is a lifetime commitment.
Matthew 24:13 tells us that those who endure to the end will be saved. A lack of total commitment has terrible consequences. As Luke 9:62 says, no one who looks back is fit for the Kingdom of God. If people fall away after receiving God's Spirit, they will not repent.
