In the Synoptic Gospels (such as Matthew 19:16-17, Mark 10:17-18, and Luke 18:18-19), when a rich young ruler explicitly asks Jesus what good deed he must do to inherit eternal life, Jesus directly answers: 'If you want to enter life, keep the commandments.' He then proceeds to list foundational moral laws from the Mosaic Torah, such as prohibitions against murder, adultery, and theft. Academic historians emphasize that this shows the historical Jesus operated firmly within a 1st-century Jewish framework, instructing his followers to achieve salvation by keeping the covenantal laws of God.
According to this analysis of Trinity dogma, Jesus taught salvation through obedience to the law and commandments within a covenantal framework.