John the Baptist went before our Lord in this character (Mark 1:2, 3). Christ so called (Heb. 6:20) as entering before his people into the holy place as their head and guide.
Forerunner
1 verse
Hebrews
Hebrews 6:20
Whither the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec.
From Easton's Bible Dictionary
Matthew George Easton, 1897