It can reasonably be said that ‘justification’ before a ‘god’, or ‘higher being’ of some sort is the center of most, if not all ‘religion’. All we have to do is take a trip through what we know of the history of the human race to conclude, quite logically, that humans are born with a ‘religious bent’, and by nature will attribute to some sort of higher being their creation, and feel the need to satisfy/appease that supreme being. What satisfies the god of any religion, how humans are found righteous  before their god in essence defines their religion and the conduct of their very lives.  This principle applies even to persons who claim no god, because in truth, for those persons, they are their own gods and the conduct of their lives revolves around satisfying themselves – becoming ‘self-actualized’, to borrow a term from Maslow.

Professing atheists aside, we turn our attention to ‘religions’ containing god(s) outside of oneself. Of these, all of them except one are identical in their view of what satisfies their god(s) – what ‘justifies’ their adherents – what makes a person ‘worthy’ of attaining whatever ‘afterlife’ they espouse. Every religion on the face of the earth, except for Christianity, involves human effort, works of human hands, in order for adherents/followers to eventually find eternal happiness.

In fact, the Christian religion, is not a ‘religion’,  if religion is defined as man’s effort to please God! Christianity, as given to us in Holy Scripture is defined by, and revolves around the person for whom it is named, the man Christ Jesus. True Christianity is about what God accomplished in the sinless life and death of His own Son, not about what we humans do, or think we can do ourselves to please God. As we come from the womb, we can do absolutely nothing! (See Psalm 14 and Romans 11, for starters).  For the Christian then, what does it mean to be found righteous, to be considered ‘just’ before a Holy God? Here’s the definition you will find in any good dictionary of biblical terms

Justification — a forensic term, opposed to condemnation. As regards its nature, it is the judicial act of God, by which he pardons all the sins of those who believe in Christ, and accounts, accepts, and treats them as righteous in the eye of the law, i.e., as conformed to all its demands. In addition to the pardon (q.v.) of sin, justification declares that all the claims of the law are satisfied in respect of the justified. It is the act of a judge and not of a sovereign. The law is not relaxed or set aside, but is declared to be fulfilled in the strictest sense; and so the person justified is declared to be entitled to all the advantages and rewards arising from perfect obedience to the law (Rom. 5:1–10).

It proceeds on the imputing or crediting to the believer by God himself of the perfect righteousness, active and passive, of his Representative and Surety, Jesus Christ (Rom. 10:3–9). Justification is not the forgiveness of a man without righteousness, but a declaration that he possesses a righteousness which perfectly and for ever satisfies the law, namely, Christ’s righteousness (2 Cor. 5:21; Rom. 4:6–8).

The sole condition on which this righteousness is imputed or credited to the believer is faith in or on the Lord Jesus Christ. Faith is called a “condition,” not because it possesses any merit, but only because it is the instrument, the only instrument by which the soul appropriates or apprehends Christ and his righteousness (Rom. 1:17; 3:25, 26; 4:20, 22; Phil. 3:8–11; Gal. 2:16).

The act of faith which thus secures our justification secures also at the same time our sanctification (q.v.); and thus the doctrine of justification by faith does not lead to licentiousness (Rom. 6:2–7). Good works, while not the ground, are the certain consequence of justification (6:14; 7:6).

Easton, M.G.: Easton’s Bible Dictionary. Oak Harbor, WA : Logos Research Systems, Inc., 1996, c1897

A person is declared justified before God’s court of judgment, once and for all, at the moment faith is placed in Christ as having satisfied the requirement of God’s law, nothing short of sinless perfection will do. No man can, or ever will achieve that state, due to inherent sin. We are by nature sinful, and that nature follows us to the grave, after which comes judgment (Hebrews 9:27).

In other words, even if a person lives a life without committing an ‘act’ of sin, even if that person has a ‘new nature’ in Christ, a taint of sin remains even at the moment of death, and eternal condemnation is still that person’s ‘just’ reward. It is only because of having placed saving faith in the finished work of Christ as having fulfilled the Law of God, that any person receives eternal salvation. And so that we would not boast in having place ‘our’ faith in Christ, the Apostle Paul tells us that even the faith necessary to save a soul is a gift from our Sovereign God! (Eph. 2:8-9)

To bring this full circle, what does this tell us of religion? Any and all religion that has in its teaching or doctrine, that humans effort can in any way make a person righteous (justify a person) before its god is false.

Any form of ‘Christianity’ that adds works to faith for justification before God is either at worst, entirely false, or at best, apostate Christianity.

That’s not one man’s opinion or personal interpretation of scripture, it’s Bible.