Bible Sharing from Luke 1: Verse 66 to 80

Verse 67-68 Zachariah praised and blessed God for his son John. John was going to be a messenger of Messiah (Luke 1:13–17; Isaiah 40:3; Malachi 3:1). Same like Zachariah, king David also blessed the name of God, because God has placed his successor on the throne (1 Kings 1:48) and seen in many psalms of David (Psalm 41:13; 72:18; 106:48) 

Verse 71: As mentioned in Psalm 106:10, God had delivered Israelites from the hand of the enemy. Starting from the Exodus from Egypt till salvation, God’s hands always sustained Israel

Verse 73-75: The first coming of Jesus, established human salvation, and the freedom from the eternal penalty of sin (Luke 1:73–74; Zephaniah 3:14–1, Hebrews 6:17–20). His second coming will establish the defeat of Satan (Revelation 19:11–15; 21:1–5). Believers are saved by Jesus, from the slavery of sin eternally (Romans 7:14–20), 1 John 3:2; 1 Cor 15:52–57)

Verse 76-77: As Isaiah and Malachi prophesied (Isaiah 40:3, Malachi 3:1; 4:6), John the Baptist is the  “voice” calling out people to prepare for the arrival of God . The “Most High” to be proclaimed is Jesus (Luke 1:31–33; Genesis 14:18–20; Hebrews 1:1–3)

John’s ministry of repentance and baptism (Matthew 3:1–5) will make people’s hearts ready for Christ’s arrival (John 1:19–23). Jesus paid the penalty of Adamic sin (2 Corinthians 5:21; Philippians 2:8) by his death on the cross. This fulfilled the covenant God had made with His people (Jeremiah 31:31–34) 

Verse 78-79: The darkness refers to the sin of the people. The light (Jesus – John 8:12, Isaiah 9:6) brought forgiveness of sin (Luke 1:77; John 3:16–17) and freedom from eternal death (John 8:51)