Is Christianity grace or law?

Galatians 3:15-23 To give a human example, brothers: even with a man-made covenant, no one annuls it or adds to it once it has been ratified. 16 Now the promises were made to Abraham and to his offspring. It does not say, “And to offsprings,” referring to many, but referring to one, “And to your offspring,” who is Christ. 17 This is what I mean: the law, which came 430 years afterward, does not annul a covenant previously ratified by God, so as to make the promise void. 18 For if the inheritance comes by the law, it no longer comes by promise; but God gave it to Abraham by a promise. 19 Why then the law? It was added because of transgressions, until the offspring should come to whom the promise had been made, and it was put in place through angels by an intermediary. 20 Now an intermediary implies more than one, but God is one. 21 Is the law then contrary to the promises of God? Certainly not! For if a law had been given that could give life, then righteousness would indeed be by the law. 22 But the Scripture imprisoned everything under sin, so that the promise by faith in Jesus Christ might be given to those who believe. 23 Now before faith came, we were held captive under the law, imprisoned until the coming faith would be revealed.

LOVE FULFILLS THE LAW. THE LAW IS FULFILLED BY LOVE

Galatians 3:24-27 So then, the law was our guardian until Christ came, in order that we might be justified by faith. 25 But now that faith has come, we are no longer under a guardian, 26 for in Christ Jesus you are all sons of God, through faith. 27 For as many of you as were baptized into Christ have put on Christ.

“A God who was only holy would not have come down to us in Jesus Christ. He would have simply demanded that we pull ourselves together, that we be moral and holy enough to merit a relationship with him. A deity that was an ‘all‐accepting God of love’ would not have needed to come to Earth either. This God of the modern imagination would have just overlooked sin and evil and embraced us. Neither the God of moralism nor the God of relativism would have bothered with Christmas.” – Tim Keller