Ephesians 2:8-10

For it is by grace you have been saved, through faith--and this not of yourselves, it is the gift of God--not by works, so that no one can boast. For we are God's workmanship, created in Christ Jesus to do good works, which God prepared in advance for us to do.

it is by grace
Romans 3:24 ...and are justified freely by his grace through the redemption that came by Jesus Christ.

you have been saved
Ephesians 2:5 ...made us alive with Christ even when we were dead in transgressions--it is by grace you have been saved.

through faith
Romans 9:30 What then shall we say? That the Gentiles, who did not pursue righteousness, have obtained it, and a righteousness that is by faith;

not by works
Deuteronomy 9:5 It is not because of your righteousness or your integrity that you are going in to take possession of their land; but on account of the wickedness of these nations, the LORD your God will drive them out before you, to accomplish what he swore to your fathers, Abraham, Isaac and Jacob.
Romans 4:2 If, in fact, Abraham was justified by works, he had something to boast about--but not before God.
2 Timothy 1:9 ...who has saved us and called us to a holy life--not because of anything we have done but because of his own purpose and grace. This grace was given us in Christ Jesus before the beginning of time, ...
Titus 3:5 ...he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit.

we are God's workmanship
Isaiah 29:23 When they see among them their children, the work of my hands (a work of art), they will keep my name holy; they will acknowledge the holiness of the Holy One of Jacob, and will stand in awe of the God of Israel.
Isaiah 43:7 ...everyone who is called by my name, whom I created for my glory, whom I formed and made.
Isaiah 60:21 Then will all your people be righteous and they will possess the land forever. They are the shoot I have planted, the work of my hands, for the display of my splendor.

created
Ephesians 4:24 ...and to put on the new self, created to be like God in true righteousness and holiness.

to do good works
Titus 2:14 ...who gave himself for us to redeem us from all wickedness and to purify for himself a people that are his very own, eager to do what is good.

NOTES:
Romans 3:20-31

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.