Do not seek revenge or bear a grudge against anyone among your people, but love your neighbor as yourself.

 Leviticus 19:1-18

Be holy because I, the Lord your God, am holy.

Do not go over your vineyard a second time or pick up the grapes that have fallen. Leave them for the poor and the foreigner. I am the Lord your God.

Do not steal. Do not lie. Do not swear falsely by my name and so profane the name of your God. I am the Lord. Do not defraud or rob your neighbor. Do not hold back the wages of a hired worker overnight. ‘Do not curse the deaf or put a stumbling block in front of the blind. Do not pervert justice; do not show partiality to the poor or favoritism to the great, 

Do not go about spreading slander among your people. 

Do not hate a fellow Israelite in your heart. Do not seek revenge or bear a grudge against anyone among your people, but love your neighbor as yourself. 

Keep my decrees.

This chapter echoes the Ten Commandments. Verse 2 stands at the heart of the moral law for Jew and Christian alike. God's holiness, the holiness we are to reflect, shows itself in concern for the underprivileged: God cares about the poor, the foreigner, the disabled. God wants to see honesty, fair dealing, impartial justice; God cares if wages are delayed. He calls his people to respect life and reputation.

Why?

For God is holy so we have to do anything like his people with love, with righteousness, with fair impartial justice.

Love your neighbor as yourself, it is the highest target to show our love from the Lord. For we are sinner bur God has loved us first.

How?

Be holy and keep God's decrees for God is holy.