Romans 8:31 What then shall we say to these things? If God is for us, who can be against us? 32 He who did not spare His own Son, but delivered Him up for us all, how shall He not with Him also freely give us all things? 33 Who shall bring a charge against God's elect? It is God who justifies.
Ro 8:31 What then shall we say to these things? If God is for us, who can be against us?
This carries Paul’s challenge to all doubters. There is no one on a par with God. The first question is general, What, then, shall we say in response to this? (cf. 4:1; 6:1; 9:14, 30) The obvious response to 8:28–30 would be to say “Hallelujah,” or to stand in open-mouthed amazement.
8:31 The key to the believer's security is that, "God is for us." What He has done for us through His Son in the past and what He is doing for us through the Spirit in the present should give us confidence. He will certainly complete His work of salvation by glorifying us in the future (cf. Phil. 1:6). Nobody and nothing can stand in His way.
Philippians 1:6 being confident of this very thing, that He who has begun a good work in you will complete it until the day of Jesus Christ;
God is making all things work for us (Rom. 8:28). In His person and His providence, God is for us. Sometimes, like Jacob, we lament, “All these things are against me” (Gen. 42:36), when actually everything is working for us. The conclusion is obvious: “If God be for us, who can be against us?”
The believer needs to enter into each new day realizing that God is for him. There is no need to fear, for his loving Father desires only the best for His children, even if they must go through trials to receive His best.
Jer. 29:11 For I know the plans that I have for you,’ declares the Lord, ‘plans for welfare and not for calamity to give you a future and a hope’ ”
This leads to a series of six more specific questions. The first is, If God is for us, who can be against us? Obviously, Satan and his demonic hosts are against believers (cf. Eph. 6:11–13; 1 Peter 5:8), but they cannot ultimately prevail and triumph over believers. God is the self-existent One and the sovereign Creator and, since He is for believers, no one can oppose believers successfully.
He is for believers to the extent that
Ro 8:32 He who did not spare His own Son, but delivered Him up for us all, how shall He not with Him also freely give us all things?
Spared not- old verb used about the offering of Isaac in Gen. 22:16. See Acts 20:29
God's plan for us cost Him dearly. He did not spare His own Son (cf. Gen. 22). Having made the greatest possible sacrifice for us already, we can know that He will also do whatever else may be necessary to conform us to the image of His Son (cf. 2 Pet. 1:3).
John 1:29 The next day he saw Jesus coming to him and said, “Behold, the Lamb of God who takes away the sin of the world!
Romans 5:8-10 and 8:32 appear to be unanswerable texts for those who deny the scriptural teaching of Christ's substitutionary atonement. These passages state plainly that, if Jesus gave Himself for us in atonement, everything else must follow because, having done the most that He could do in dying as our substitute, the lesser things—such as conviction of sin, repentance, grace, faith— must inevitably follow. God's great eternal purpose, expressed so beautifully in 8:28-30, must reach its end in glorification for all those for who trust in Him
The argument here is from the greater to the lesser. If when we were sinners, God gave us His best, now that we are God’s children, will He not give us all that we need? In Mt 6 Jesus used this same argument when He tried to convince people that it was foolish to worry and fear. God cares for the birds and sheep, and even for the lilies; surely He will care for you!