faith only
Gen 15:5 And he brought him outside and said, "Look toward heaven, and number the stars, if you are able to number them." Then he said to him, "So shall your offspring be."
Gen 15:6 And he believed the LORD, and he counted it to him as righteousness.
Gal 3:6 just as Abraham “believed God, and it was counted to him as righteousness”?
Gal 3:7 Know then that it is those of faith who are the sons of Abraham.
Gal 3:8 And the Scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand to Abraham, saying, “In you shall all the nations be blessed.”
Gal 3:9 So then, those who are of faith are blessed along with Abraham, the man of faith.
If you were using the word "faith" with the correct understanding you would get my attention.
Salvation is by "Grace" through "Faith". So thats two different mandatory things that must be fulfilled.