Forever, O Lord, your word is firmly fixed in the heavens. Psalms 119:89
Truth is not relative. If truth were then it couldn’t be truth for what would be true for one could be considered a fallacy by another. Therefore, it is utter foolishness to make assertions that truth is just a matter of opinion and we must be tolerant of other’s views on the Gospel and all of the vital aspects of our faith. On the other hand, I am perfectly willing to call another Christian my brother or sister in Christ even though we may disagree on things about our faith that are not barriers to orthodoxy. I find the discussions about these things with them to be wonderful opportunities of iron sharping iron. However, that is not the same thing as joining in fellowship with those who have serious issues with vital parts of doctrine that are non-negotiable. What do I mean? I have no problem loving and having fellowship with a Christian who is not Reformed in their Theology as I am. However, I draw the line and, as God leads, contend with those who, for example, deny the deity of Christ or add works as a requirement for salvation or deny the inerrancy of the Bible or teach that Biblical Truth is inherently unknowable, therefore, we cannot hold to solid doctrinal truths.