so what you are saying is that someone who believes that Jesus is God and turns to Him in love and turns from their sins who deviates from the truth of God's word cannot be a heretic but only those who are unsaved or given up their salvation are heretics when they deviate from or deny the truth of God's word...I think I can agree with that
Titus 3:10 10 A man that is an heretick after the first and second admonition reject;