Do not be carried about with various and strange doctrines. For it is good that the heart be established by grace, not with foods which have not profited those who have been occupied with them. (Hebrews 13:9, NKJV)
There is an undeniable, irrefutable connection between being “established by grace” and the doctrine we believe and hold. We are clearly warned against “strange doctrines” precisely because they jeopardize grace rather than establish it. For example, binding food restrictions does not make one firm in grace – just the opposite. Paul commended the Ephesian church elders “to God and to the word of His grace” because it “is able to build you up and give you an inheritance” among the sanctified (Acts 20:32). Grace does not minimize or ignore doctrine. Any teaching that tries to convince you that God’s grace overlooks false doctrine is not “the word of His grace.” Grace and doctrine are not adversaries. Sound doctrine advocates for grace, and grace is sure as we stand “in truth” (Col. 1:6).