By His grace, He clothes us with a robe a righteousness (Isa 61:10), not by our works, but by faith (Rom 4:5). Like Abraham who believed God and it was counted to him as righteousness (Gen 15:6), so we too place our trust in the Lord who declares us righteous.
I want to give you a quick reminder: Your righteousness is not dependent on your works. You may have woken up this morning and read your bible, prayed for an hour, and then served in a soup kitchen all day. Guess what? If you have repented and believed the gospel, then both of these things are true for you: “All our righteous deeds are like a polluted garment” (Isa 64:6) and “The LORD is our righteousness” (Jer 33:16). What if you woke up late, growled at a piece of burnt toast, and rushed home to a dirty house? “All our righteous deeds are like a polluted garment” (Isa 64:6) and “The LORD is our righteousness” (Jer 33:16).
The righteousness that we receive from God is not dependent on our works. Rather, it is dependent on the work of Christ.