For this dispensation, we are commanded to rely on the imputed righteousness of his Son in the cross. (Romans 5:17-19).
It honors what Christ did on the cross Romans 3:26 To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.
"Dispensationalism" is wrong, God transcends time, is eternal and almighty and has always, and will always grant salvation by his grace.
God's salvation throughout the ages has always been by grace, and never, ever, in any "dispensation", by self-righteousness.
The imputed righteousness of his Son on the cross is for those who received salvation of all who ever lived, currently live, or will live - it is not a "dispensation", but an eternal truth, it transcends time, and our names have been written in the book of salvation before the foundation of the world. How do you think was Abraham, Isaac, Jacob and all the prophets saved to be in God's Kingdom, other than the sacrificial offering of God's son Christ Yeshua? The sacrificial offering of animals could never pay like-for-like for any man's sins. The sacrificial offerings pointed to what God's son Christ Yeshua would accomplish for us on the cross. There will even again be remembrance sacrificial offerings in future, in Ezekiel's prophesied temple, again pointing back to what God's son Christ Yeshua accomplished already for us on the cross (Ezekiel 46:20).
Luke 13 (ESV)
28 In that place there will be weeping and gnashing of teeth, when you see Abraham and Isaac and Jacob and all the prophets in the kingdom of God but you yourselves cast out.
Ephesians 1 (ESV)
3 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places,
4 even as
he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love
5 he predestined us for adoption as sons through Jesus Christ, according to the purpose of his will,
6 to the praise of his glorious grace, with which he has blessed us in the Beloved.
Revelation 13 (ESV)
7 Also it was allowed to make war on the saints and to conquer them. And authority was given it over every tribe and people and language and nation,
8 and
all who dwell on earth will worship it, everyone whose name has not been written before the foundation of the world in the book of life of the Lamb who was slain.
Ezekiel 46 (ESV)
20 And he said to me, "This is the place where the priests shall boil the guilt offering and the
sin offering, and where they shall bake the grain offering, in order not to bring them out into the outer court and so transmit holiness to the people."