If anyone sins because they do not speak up when they hear a public charge to testify regarding

Romans 9.4:Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises; 

something they have seen or learned about, they will be held responsible.

◄ Leviticus 5:1 ►

New International Version
"'If anyone sins because they do not speak up when they hear a public charge to testify regarding something they have seen or learned about, they will be held responsible.