Justin Bieber is in full-on Jesus mode — dropping his hot take on what really counts as cheating — and his definition is stirring up serious drama online!

The singer — married to Hailey Bieber since 2018 — got real on a Twitch livestream Monday, quoting Jesus’ words, “If you even think of a woman with lust, it’s the same as actually doing it” … adding that even a split-second thought basically counts as adultery.

Justin kept his religious musings going, saying showing anger toward someone is the same as killing them — then cracked a joke that by that logic, he’d racked up like 10 “kills” just this week.

This comes after a year where the chatter about trouble in paradise in his love life was rife … especially when Hailey ditched her ring earlier this year.