Paul spoke to both Jews and Gentiles in the synagogue at Pisidian Antioch on a Shabbat day:
Acts 13:38,39 YLT
Let it therefore be known to you, men, brethren, that through this one ("this man") to you is the forgiveness of sins declared, and from all things from which ye were not able in the law of Moses to be declared righteous, in this one every one who is believing is declared righteous;
What are those "all things" from which we cannot be declared righteous under the Torah of Moshe?
Let us consider the following examples:
(1) King David acknowledged that no one can be considered righteous before YHWH
Psalm 143:1,2 CJB
(YHWH), hear my prayer;
listen to my pleas for mercy.
In your faithfulness, answer me,
and in your righteousness.
Don’t bring your servant to trial,
since in your sight no one alive
would be considered righteous.
(2) King David also acknowledged this in a song of ascents
Psalm 130:3,4 CJB
Yah, if you kept a record of sins,
who, Adonai, could stand?
But with you there is forgiveness,
so that you will be feared.
(3) The Preacher, son of David, wrote in Ecclesiastes
Ecclesiastes 7:20 YLT
Because there is not a righteous man on earth that doth good and sinneth not.
(4) King Solomon, in his Prayer of Dedication, said
1 Kings 8:46 ESV
If they sin against you—for there is no one who does not sin—and you are angry with them . . .
