Salvation is of the Lord from beginning to end. Yes, I must believe. Yes, I must respond. Yes, I must receive Christ. But for me to say “yes” to any of those things, my heart must first be changed by the sovereign, effectual power of God the Holy Spirit.
Soli Deo gloria is the motto that grew out of the Protestant Reformation and was used on every composition by Johann Sebastian Bach. He affixed the initials SDG at the bottom of each manuscript to communicate the idea that it is God and God alone who is to receive the glory for the wonders of His work of creation and of redemption. At the heart of the sixteenth-century controversy over salvation was the issue of grace.
It was not a question of man’s need for grace. It was a question as to the extent of that need. The church had already condemned Pelagius, who had taught that grace facilitates salvation but is not absolutely necessary for it. Semi-Pelagianism since that time has always taught that without grace there is no salvation. But the grace that is considered in all semi-Pelagian and Arminian theories of salvation is not an efficacious grace. It is a grace that makes salvation possible, but not a grace that makes salvation certain.
In the parable of the sower we see that regarding salvation, God is the one who takes the initiative to bring salvation to pass. He is the sower. The seed that is sown is His seed, corresponding to His Word, and the harvest that results is His harvest. He harvests what He purposed to harvest when He initiated the whole process. God doesn’t leave the harvest up to the vagaries of thorns and stones in the pathway. It is God and God alone who makes certain that a portion of His Word falls upon good ground. A critical error in interpreting this parable would be to assume that the good ground is the good disposition of fallen sinners, those sinners who make the right choice, responding positively to God’s prevenient grace. The classical Reformed understanding of the good ground is that if the ground is receptive to the seed that is sown by God, it is God alone who prepares the ground for the germination of the seed.