NET

15 They rejected his rules, the covenant he had made with their ancestors, and the laws he had commanded them to obey. They paid allegiance to worthless idols, and so became worthless to the Lord. They copied the practices of the surrounding nations in blatant disregard of the Lord’s command.

Darby

15 And they rejected his statutes^D2285, and his covenant which he had made with their fathers, and his testimonies which he had testified unto them; and they followed vanity and became vain^D2286, and [went] after the nations that were round about them, concerning whom Jehovah had charged them that they should not do like them.

Darby Bible Notes

statutes - As ver. 37 and Ex. 12.24. vain - Or 'vanity.'

KJV

15 And they rejected his statutes, and his covenant that he made with their fathers, and his testimonies which he testified against them; and they followed vanity, and became vain, and went after the heathen that [were] round about them, [concerning] whom the LORD had charged them, that they should not do like them.