Did Jesus come to create a new religion or to certify Judaism?

No, Jesus came to seek and to save the sinners the Father gave to Him.

John 17:1-2

Jesus spoke these words, lifted up His eyes to heaven, and said: "Father, the hour has come. Glorify Your Son, that Your Son also may glorify You, as You have given Him authority over all flesh, THAT HE SHOULD GIVE ETERNAL LIFE (to everyone in the world? No!) TO AS MANY AS YOU HAVE GIVEN HIM.

John 17:9-11

"I pray for THEM. I DO NOT PRAY FOR THE WORLD but for those (and only for those) WHOM YOU HAVE GIVEN ME, for they are Yours. And all Mine are Yours, and Yours are Mine, and I am glorified in them. Now I am no longer in the world, but these are in the world, and I come to You. Holy Father, KEEP THROUGH YOUR NAME THOSE WHOME YOU HAVE GIVEN ME, that they may be one as We are.

John 6:37-39

ALL THAT THE FATHER GIVES ME WILL COME TO ME, and the one who comes to Me I will by no means cast out. For I have come down from heaven, not to do My own will, but the will of Him who sent Me.

This is the will of the Father who sent Me, that of ALL HE HAS GIVEN ME I should lose nothing, but should raise it up at the last day.

John 6:44

NO ONE CAN COME TO ME (you cannot wake up one day and say I am going to accept Jesus as my Lord and Savior as dead people cannot wake up, accept, nor receive anything - dead in trespasses and sins) UNLESS THE FATHER WHO SENT ME DRAWS HIM; and I will raise him up at the last day.

How does the Father draw them?

John 5:25

Most assuredly, I say to you, the hour is coming, and now is, when the dead (in trespasses and sins whom the Father made alive) will hear the voice of the Son of God; and (only) those who hear will live.

John 10:27-29

My sheep hear My voice, and I know them, and they follow Me. And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. My Father, WHO HAS GIVEN THEM TO ME, is greater than all; and no one is able to snatch them out of My Father's hand.

Jesus didn’t come to start religion, that comes from mankind. Jesus came to reveal the Father’s attributes, reveal and execute the Father’s reconciliation plan, and reveal the Father’s redeemer.

When the execution of this reconciliation plan is completed, Jesus will judge the demons and ungodly sinners for their own sins in perfect justice and true righteousness casting them into the lake of fire forever.

Jesus will then hand over the Kingdom to the Godhead who will see the created world for the first time unveiled and will destroy the entire world - the heavens and the earth.

1 Corinthians 15:20-28

The Last Enemy Destroyed

But now Christ is risen from the dead, and has become the firstfruits of those who have fallen asleep. For since by man came death, by Man also came the resurrection of the dead. For as in Adam all die, even so in Christ all shall be made alive. But each one in his own order: Christ the firstfruits, afterward those who are Christ's at His coming. THEN COMES THE END, WHEN HE DELIVERS THE KINGDOM TO GOD THE FATHER, when He puts an end to all rule and all authority and power. For He must reign till He has put all enemies under His feet. The last enemy that will be destroyed is death. For "He has put all things under His feet." But when He says "all things are put under Him," it is evident that He who put all things under Him is excepted. Now when all things are made subject to Him, THEN THE SON (The Man Jesus who is the tabernacle and only visible part of the invisible Spirit of God) HIMSELF WILL ALAO BE SUBJECT TO HIM WHO PUT ALL THINGS UNDER HIM, that God may be all in all.

2 Peter 3:10-13

The Day of the Lord

But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the elements will melt with fervent heat; both the earth and the works that are in it will be burned up. Therefore, since all these things will be dissolved, what manner of persons ought you to be in holy conduct and godliness, looking for and hastening the coming of the day of God, because of which the heavens will be dissolved, being on fire, and the elements will melt with fervent heat? Nevertheless we, according to His promise, look for new heavens and a new earth in which righteousness dwells.

Revelation 20:11-14

The Great White Throne Judgment

Then I saw a great white throne and Him who sat on it, from whose face the earth and the heaven fled away. And there was found no place for them. And I saw the dead, small and great, standing before God, and books were opened. And another book was opened, which is the Book of Life. And the dead were judged according to their works, by the things which were written in the books. The sea gave up the dead who were in it, and Death and Hades delivered up the dead who were in them. And they were judged, each one according to his works. Then Death and Hades were cast into the lake of fire. This is the second death.

Revelation 21:1-8

All Things Made New

Now I saw a new heaven and a new earth, for the first heaven and the first earth had passed away. Also there was no more sea. Then I, John, saw the holy city, New Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband. And I heard a loud voice from heaven saying, "Behold, the tabernacle of God is with men, and He will dwell with them, and they shall be His people. God Himself will be with them and be their God. And God will wipe away every tear from their eyes; there shall be no more death, nor sorrow, nor crying. There shall be no more pain, for the former things have passed away."

Then He who sat on the throne said, "Behold, I make all things new." And He said to me, "Write, for these words are true and faithful."

And He said to me, "It is done! I am the Alpha and the Omega, the Beginning and the End. I will give of the fountain of the water of life freely to him who thirsts. He who overcomes shall inherit all things, and I will be his God and he shall be My son. But the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone, which is the second death."