From the days of John the Baptist
Bible talks about many key characters, and everyone reflected their unique spiritual gift, Then why Jesus Christ said "From the days of John the Baptist" when he preached the Gospel.
Enos: Calling upon the name of the Lord - Genesis 4:26
Noah: Rainbow covenant - Genesis 9:8-17
Abraham: They must be circumcised - Genesis 17:1-14
Moses: Laws - Deuteronomy 4:44
Aaron: Priesthood - Leviticus 8
John the Baptist: Baptism
Yes, Jesus Christ would have said from the Day of Abraham or From the of Moses, but to emphasize the importance of the Baptism, our Lord Jesus Christ mentioned from the days of John the Baptist - The Law and the Prophets were until John; since then the good news of the kingdom of God is preached, and everyone forces his way into it - Luke 16:16
And John is the only person Jesus Christ called by mentioning his profession "John the Baptist" to emphasize the importance of the Baptism - From the days of John the Baptist until now the kingdom of heaven has suffered violence, and the violent take it by force - Matthew 11:12