Before the arrival of Jesus, John preached a baptism of repentance to all the people of Israel.
Berean Standard Bible (BSB)
before his coming, when John had first preached the baptism of repentance to Israel.
World English Bible (WEB)
When John{G2491} had first preached{G4296}{(G5660)} before{G4253} his{G846} coming{G4383}{G1529} the baptism{G908} of repentance{G3341} to all{G3956} the people{G2992} of Israel{G2474}.
Strong's King James
(24) Yochanan (Yah's grace) proclaimed before His coming an immersion of returning-repentance to all Israel's people.
The F.O.G
The F.O.G Message
John having first preached, before his coming, a baptism of reformation to all the people of Israel;
Young's Literal Translation