1. The genealogies of Jesus Christ in Matthew 1:1-16 & Luke 3: 23-38 diverged from David to Jesus Christ. One passed through Solomon (Mt 1:6) and the other through Nathan (Luke 3:31). Both Solomon & Nathan were David's sons by Bathsheba (1 Chronicles 3:5). Joseph (Jesus' stepfather) has 2 "fathers", Jacob & Heli (mentioned at Matthew 1:16 & Luke 3:23 respectively). The "fathers" have different ancestors all the way to David, & therefore can't be the same person. One of them must be Joseph's FATHER-in-law (or Mary's father).
2. Both Mary & Joseph were from the tribe of Judah. Though they were based in Nazareth, both had to travel to Bethlehem to "register in their own city" (Luke 1: 26,27 & 3: 1-5). Jesus had to be both biologically (through Mary) & socially (or patrilinearly, through Joseph) from Judah (Micah 5:2).
3. There were 2 towns named Bethlehem in Israel then. One was in the tribe of Judah (Ruth 1:1) in Judea (Matthew 2:1), while the other was in the tribe of Zebulun (Joshua 19:10-16) in Galilee (Matthew 4:15). That's why Micah 5:2 was specific.
4. On the 40th day of his birth, Jesus' parents offered a "poor man's offering" of 2 turtledoves (Leviticus 12: 6-8; Luke 2 : 21-24). This is well before the astrologers came with their costly gifts.
5. Jesus was almost 2 years old when the astrologers came from the East. Shortly after they left, Jesus' parents had to flee to Egypt with him. Note that his just-6-months-older cousin , John the Baptizer, (who was also in Judea) (Luke 1: 36-40) escaped the massacre of "boys aged 2 years & under" (Matthew 2:16) without having to relocate. There must have been official birth (& death) registration records to guide the soldiers against the desperate mothers' understandable lies.
6. The star did not lead the astrologers to Jesus in Bethlehem directly, but first took them to murderous Herod (who would have killed Jesus, but for God's intervention) in Jerusalem. Note that the angels and the shepherds did not tell Herod about Jesus earlier. Satan must have used the star to endanger Jesus.
7. There are 2 other persons named Jesus in the Bible apart from Jesus Christ (Luke 3:29 ; Colossians 4:11). Therefore, it is not a sin to name your son Jesus (as long as you don't call him MESSIAH or CHRIST).
8. Mary was not sinless ; she did purification after childbirth like any other Jewish woman (Leviticus 12: 6-8; Luke 2 : 21-24 ; Romans 3:23). It was the Holy Spirit that shielded Jesus from contamination in the womb (Luke 1:35).
9. Zechariah's doubting of Angel Gabriel's message (despite the precedent of Abraham and Sarah) led to his being made dumb for some time. Mary's doubt was understandable because no virgin had ever given birth without sex before. Hence, the angel patiently explained things to her.
10. Mary wasn't a virgin for life. After giving birth to Jesus, she had 4 sons & at least 2 daughters for Joseph (Matthew 1:25 & 13: 53-56).
