'Performing' in the Bible

instead, it [is] a witness between us and you, and between our generations after us for performing the serving of Yahweh in his presence with our burnt offerings, sacrifices, and fellowship offerings; so that your children may not say in the future to our children, "You have no portion in Yahweh." '

[and] in my statutes he goes about and my regulations he keeps, {performing faithfully} --[then] he is righteous, [and] certainly he will live," {declares} the Lord Yahweh.