“Therefore He who supplies the Spirit to you and works miracles among you, does He do it by the works of the law, or by the hearing of faith?—”
Paul’s fourth appeal to the Galatians is about God’s provision of rich resources and wonders among them. This is an argument from God’s point of view.
Therefore He who supplies the Spirit to you
The word “supplies” means to supply fully, abundantly. Secular Greek literature used this term for a wealthy sponsor who supplied enormous funds to operate Greek plays. The Holy Spirit is a grant from God. God, in His great generosity, gave the Galatians more than they deserved. God is a Provider.
and works miracles among you,
God worked apostolic miracles among the Galatians (Acts 14:3,8-11). Galatians was an early book of the New Testament. God used apostolic miracles to give credibility to the New Testament. His ability to give us whatever we need humbles us.
does He do it by the works of the law,
Christians do not have to earn God’s favor or grace. Legalism implies that God begrudges what He gives us. God is more than willing to give us what we need.
or by the hearing of faith?
God is no miser, as the legalists would have it. We do not have to bribe Him for blessings. We appropriate by faith what He has provided to help us live the Christian life.
God is a generous provider.
The reason we operate by faith is that we believe God is a generous provider. The Christian can confidently appeal to God’s grace to provide what he needs for Christian living. Faith sustains our spirituality. We can forgive others as Christ forgave us. We do not bribe God for blessings; He gives blessings by His free will. By faith we accept what He gives.