In a very famous hymn written by Isaac Watts way back in the 1700s, he wrote the following: "Forbid it, Lord, that I should boast, Save in the death of Christ my God!"
Anyone who knows the salvation of God in Christ could not agree more. The saved cannot say that he saved himself by his efforts for salvation is "not of works" (Eph. 2:9).
He cannot assume that it was his character that did it "for all have sinned and fall short of the glory of God" (Rom. 6:23).
He cannot assert that it was his religious achievements that caused it for prior to salvation, his righteous deeds are like "filthy rags" (Isa. 64:6) and "rubbish" (Philippians 3:8) in God's sight.
His claim to salvation is in none of these. For salvation is not founded on all of these. Rather, salvation is based on what the Lord Jesus Christ did on the cross. His boast is not on self and what self has done but on what the Savior did on the cross.
Is He your boast? Is He your salvation? Have you trusted in Him alone for salvation?
