Jesus only a Man (Not God)  in Islam

On December 25th, the Christians celebrate the birth of their God, Jesus, the Son of God. The Christians worship the Father, the Son (Jesus), and the Holy
Spirit as their God.

In Islam, we worship one God only and no one else. In fact, Islam regards Jesus as one of the messengers of God just like Moses, Abraham, Isaac, and Muhammad:

"We gave Moses the Book and followed him up with a succession of Messengers; We gave Jesus, the son of Mary, Clear (Signs) and strengthened him with the Holy Spirit. Is it that whenever there comes to you a Messenger with what ye yourselves desire not, ye are puffed up with pride" Some ye called impostors, and others ye slay!" [Al Baqarah:87]

"Say ye: "We believe in Allah, and the revelation given to us, and to Abraham, Isma'il, Isaac, Jacob, and the Tribes, and that given to Moses and Jesus, and
that given to (all) Prophets from their Lord: we make no difference between one and another of them: and we bow to Allah (in Islam)." [Al Baqarah:136]

Some Christians believe Jesus is God because his birth without a Father (though in Matthew 1:16 stated that Jesus is the son of Joseph). Islam does not believe
that way. In fact, God explains in the Quran that the creation of Jesus is just like of Adam. Adam not only has no father, but no mother either, but that does not
mean that Adam is a God.

"The similitude of Jesus before Allah is as that of Adam; He created him from dust, then said to him "Be": and he was." [Ali Imran:59]

God, in the Quran, order the People of the Book (the Jews and the Christians) to worship only one God and no one else like Jesus.

"O People of the Book! commit no excesses in your religion: nor say of Allah aught but the truth. Christ Jesus the son of Mary was (no more than) A Messenger of Allah, and His Word, which He bestowed on Mary, and
a Spirit proceeding from Him: so believe in Allah and His Messengers. Say not "Trinity": desist: it will be better for you: for Allah is One God: glory be to Him:
(far Exalted is He) above having a son. To Him belong all things in the heavens and on earth. And enough is Allah as a Disposer of affairs." [An Nisaa:171]

God also question Jesus, is Jesus ask people to worship him as a God, and Jesus said he never do that.

"And behold! Allah will say: "O Jesus the son of Mary! didst thou say unto men, 'Worship me and my mother as gods in derogation of Allah'"" He will say: "Glory to Thee! never could I say what I had no right (to say). Had I said such a thing, Thou wouldst indeed have known it. Thou knowest what is in my heart, though I know not what is in Thine. For Thou knowest in full all that is hidden." [Al Maaidah:116]

Before Jesus born on December 25th O BC (though the historians say December 25th is not the birth date of Jesus, but Solstice Day), God in the ten commandment order people to worship Him only and no one else, including Jesus or the Holy Spirit (Gabriel in Islam belief).

Exodus:
20:3 Thou shalt have no other gods before me.

Here is the God"s word in the Quran that state God is
one:

"Say: He is Allah, the One and Only;
Allah, the Eternal, Absolute;
He begetteth not, nor is He begotten;
And there is none like unto Him." [Al Ikhlas]

May peace be upon you.