Isiqalo sevangeli elimayelana noJesu Khristu, iNdodana kaNkulunkulu. Kunjengalokhu kulotshiwe encwadini kamphrofethi u-Izaya, ukuthi:
“Bheka, ngithuma isithunywa sami phambi kwakho,
esiyakulungisa indlela yakho;
izwi lomemezayo ehlane, lithi:
‘Lungisani indlela yeNkosi,
nenze imikhondo yayo iqonde.’ ”
Kwavela uJohane ebhabhadisa ehlane, eshumayela umbhabhadiso wokuphenduka, kube ngukuthethelelwa kwezono. Kwaphuma, kweza kuye lonke iJudiya, nazo zonke izakhamuzi zaseJerusalema, babhabhadiswa nguye emfuleni iJordani, bevuma izono zabo. UJohane wayegqoke ingubo yoboya bekameli, ebophe umchilo woqhotho lwesikhumba okhalo lwakhe, edla izinkumbi noju lwasendle. Wayeshumayela ethi: “Emva kwami kuza onamandla kunami, engingafanele nokuba ngikhothame ngithukulule umchilo wezicathulo zakhe. Mina nginibhabhadisa ngamanzi, kepha Yena uzakunibhabhadisa ngoMoya oNgcwele.”
Ngalezo zinsuku kwafika uJesu evela eNazaretha eGalile, wabhabhadiswa nguJohane eJordani. Kwathi nje ukuba aphume emanzini, wabona izulu livuleka, noMoya ehlela phezu kwakhe njengejuba. Kwezwakala izwi livela ezulwini, lithi: “Wena uyiNdodana yami ethandekayo; ngithokozile ngawe.”
Masinyane uMoya wamkhiphela ehlane elilugwadule. Wahlala khona izinsuku ezingama-40 elingwa nguSathane, wayephakathi kwezilwane zasendle, kodwa izingelosi zazimkhonza.
Emva kokuboshwa kukaJohane, uJesu wafika eGalile; washumayela ivangeli likaNkulunkulu, ethi: “Isikhathi sigcwalisekile, umbuso kaNkulunkulu ususondele; phendukani, nikholwe yivangeli.”