You shall not hate in your heart anyone of your kin; you shall reprove your neighbor, or you will incur guilt yourself. You shall not take vengeance or bear a grudge against any of your people, but you shall love your neighbor as yourself: I am the Lord.

The Bible (The Old Testament) (14th - 2nd C BC) Judeo-Christian sacred scripture [Tanakh, Hebrew Bible], incl. the Apocrypha (Deuterocanonicals)

Leviticus 19:17-18 [NRSV (2021 ed.)]
    (Source)

One of the components of the Greatest Commandments, as outlined by Christ; see Matthew 22:36-40. Alternate translations:

Thou shalt not hate thy brother in thine heart: thou shalt in any wise reason with thy neighbor, and not suffer sin upon him. Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbor as thyself: I am the Lord.
[KJV (1611)]

You must not bear hatred for your brother in your heart. You must openly tell him, your neighbor, of his offence; this way you will not take a sin upon yourself. You must not exact vengeance, nor must you bear a grudge against the children of your people. You must love your neighbor as yourself. I am Yahweh.
[JB (1966)]

Do not bear a grudge against others, but settle your differences with them, so that you will not commit a sin because of them. Do not take revenge on others or continue to hate them, but love your neighbors as you love yourself. I am the Lord.
[GNT (1976)]

You will not harbour hatred for your brother. You will reprove your fellow-countryman firmly and thus avoid burdening yourself with a sin. You will not exact vengeance on, or bear any sort of grudge against, the members of your race, but will love your neighbor as yourself. I am Yahweh.
[NJB (1985)]

You must not hate your fellow Israelite in your heart. Rebuke your fellow Israelite strongly, so you don’t become responsible for his sin. You must not take revenge nor hold a grudge against any of your people; instead, you must love your neighbor as yourself; I am the Lord.
[CEB (2011)]

You shall not hate your kinsfolk in your heart. Reprove your kin but incur no guilt on their account. You shall not take vengeance or bear a grudge against members of your people. Love your fellow [Israelite] as yourself: I am יהוה.
[RJPS (2023 ed.)]