One verse that promises Jesus to come is Zechariah 9:9. This verse shows that Jerusalem's king will come on a foal of a donkey. This verse was given before Jesus ever came to the earth, but was fulfilled once he was born and grew up spreading his ministry. The verse came to reality in Matthew 21:1-9.
Another verse that promised Jesus to come was in Isaiah 7:14. This verse shows that Jesus would be born of a virgin and he will be called Immanuel (God with us). This verse came to reality in Matthew 1:23 where Jesus was born from virgin Mary which is the nativity scene that many of us look at today and remember the birth of Jesus through Christmas.
Therefore, let us always remember that Christmas is not just about celebrating the festive nights and lights that are put on display, but let us always remember that Christ was promised to us and that is why we are able to believe his coming to this earth to bring salvation.