By their words and deeds
For by your words you will be justified, and by your words you will be condemned.
Matthew 12:37 NASB
26 And He said to him, “What is written in the Law? How does it read to you?”
27 And he answered, “You shall love the Lord your God with all your heart, and with all your soul, and with all your strength, and with all your mind; and your neighbor as yourself.”
28 And He said to him, “You have answered correctly; do this and you will live.”
Luke 10:26-28 NASB
… and will come forth; those who did the good deeds to a resurrection of life, those who committed the evil deeds to a resurrection of judgment.
John 5:29 NASB
By their beliefs (and being born again)
He who has believed and has been baptized shall be saved; but he who has disbelieved shall be condemned.
Mark 16:16 NASB
Jesus answered and said to him, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God.”
John 3:3 NASB
18 He who believes in Him is not judged; he who does not believe has been judged already, because he has not believed in the name of the only begotten Son of God…
36 He who believes in the Son has eternal life; but he who does not obey the Son will not see life, but the wrath of God abides on him.”
John 3:18, 36 NASB
Last Judgement
The critic has a problem with the Last Judgement. Will God judge people by their (good or bad) deeds or by their belief? It is a pity that the critic has not the slightest idea how to interpret what he reads. What are the principles of Gods judgement?
Words and deeds
It is not so difficult that God will judge righteously. But how will He judge? The quoted texts under “words and deeds” are very instructive. The Lord will judge people according to their deeds as any normal judge. However God is more. He is able to also verify the words of man, and actually: words refer to deeds. They are always closely connected. Good words give good deeds. Good deeds cannot go together with bad words.
Moreover words and deeds both stand for the heart. Good words and good deeds represent a good heart.
Beliefs
A second model for judgement is belief, faith. Real belief stand for a good heart, good words and good deeds (despite minor sins). So this second model is an extension of the former model and is not contradictive to it but compatible with it.
If belief is not genuine, but false, it cannot keep the standard of good words and works. The parable of the wise and the unwise girls shows that. Those who had not enough oil in their lamp missed the party (Matthew 25:1-13).
Conclusion
The two models of judgement are from the same order, the belief model is an extension of the first.
No Bible Contradiction