When will the Messiah come to save the World ?

Be exceedingly happy, O daughter of Zion; Shout, O daughter of Jerusalem. Behold! Your King (Messiah) shall come to you. He is just and victorious; humble, and riding on a donkey …. טגִּילִ֨י מְאֹ֜ד בַּת־צִיּ֗וֹן הָרִ֙יעִי֙ בַּ֣ת יְרֽוּשָׁלִַ֔ם הִנֵּ֚ה מַלְכֵּךְ֙ יָ֣בוֹא לָ֔ךְ צַדִּ֥יק וְנוֹשָׁ֖ע ה֑וּא עָנִי֙ וְרֹכֵ֣ב עַל־חֲמ֔וֹר וְעַל־עַ֖יִר בֶּן־אֲתֹנֽוֹת:

• Zechariah 9 : 9 (Old Testament / Tanakh)

With regard to Moshiach ’s arrival, the Gemara points out the following seeming contradiction:

“One verse states that Moshiach will arrive ‘on a cloud,’ (Daniel 7:13) while another refers to ‘a poor man, riding on a donkey.’ (Zechariah 9:9) ” The Gemara explains: “If the Jewish people merit, he will arrive ‘on a cloud,’ if not, he will arrive as ‘a poor man, riding on a donkey.’ ”

Daniel 7:13 (Old Testament / Tanakh)

I saw in the visions of the night, and behold with the clouds of the heaven, one like a Son of Man (Messiah) was coming, and he came up to the Ancient of Days and was brought before Him. יגחָזֵ֚ה הֲוֵית֙ בְּחֶזְוֵ֣י לֵֽילְיָ֔א וַֽאֲרוּ֙ עִם־עֲנָנֵ֣י שְׁמַיָּ֔א כְּבַ֥ר אֱנָ֖שׁ אָתֵ֣ה הֲוָ֑א וְעַד־עַתִּ֚יק יֽוֹמַיָּא֙ מְטָ֔ה וּקְדָמ֖וֹהִי הַקְרְבֽוּהִי:

Jesus Faces the Sanhedrin - Mark 14:61 (New Testament)

… Jesus remained silent and made no reply. Again the High Priest questioned Him, “Are You the Messiah, the Son of the Blessed One?” “I am,” said Jesus, “and you will see the Son of Man sitting at the right hand of Power and coming with the clouds of heaven.” At this, the High Priest tore his clothes and declared, “Why do we need any more witnesses?…