Many holding to Dispensational theology tell us that the end of the age of grace will occur at the beginning of the 7 year Tribulation. To say that the age of grace is over would necessarily mean that for mankind there can be no more salvation would it not? Or stated another way, would it not mean that Jesus life, death, and resurrection could no longer be applied to ones sin? For His act on our behalf was the preplanned completed act providing Grace toward all who would call upon Him with a complete trust in His outpouring of grace and mercy. If the age of grace is over can God’s offer of salvation be anything other than a works salvation? If Grace were over then how can ones faith be placed in God and not in his own efforts or works?
Then if there is such a thing as a left behind people who would embrace God what would be the way for them to be saved — if there is no grace but only wrath for ones sin?
For of His fullness we have all received, and grace upon grace. For the Law was given through Moses; grace and truth were realized through Jesus Christ. John 1:16-17 NASB1995
There are those theologians who say that, Israel before Christ, was saved by obedience to the law, yet, scripture tells us that no man can keep the law. Paul tells us that Abraham was saved by faith in God, and not by his own efforts. Abraham had stated that God would provide the lamb. Yes, our obedience to Him and to the hearing and application to His word proves our faith, but our faith is not in our own efforts, it is in God’s promises to be gracious to us who have sinned against Him. The age of humankind is the age of God’s grace to man. The law looked forward to Christ’s coming as the lamb off God. Israel looked forward to a time when God would provide salvation. The very name of His Son Yeshua means “salvation. We look back to the time when He did provide our salvation. They had looked forward to it; if grace is removed then there will be no salvation, but only wrath.
And though it is true that wrath will come, yet it will be swift when it comes.
While they are saying, “ Peace and safety!” then destruction will come upon them suddenly like labor pains upon a woman with child, and they will not escape. 1 Thessalonians 5:3 NASB1995
Should you wish to attempt to see and understand wrath without grace read Leviticus 10. There are of course other passages. Sodom and Gomorrah depict a time when Grace is replaced with wrath. Wrath is the punishment following the Judgment and offer of repentance for the people by God. Following His outpouring of wrath to those deserving of it because they are evil; then Jesus says that He will return to judge every man according to his works. That time of judgment will be couched in His grace.