John 1:14 And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth
A person that shows compassion as a doctor but has no knowledge of the craft, and a doctor that has knowledge but no compassion are both dangerous to your health. One will damage your health physically and the other emotionally. You need one full of both knowledge (Truth) and compassion (Grace). It was necessary for Jesus to come full of both in order for us to be saved.
Jesus applies these principles in conversing with a woman at Jacob’s well (Joh 4). Jesus knowing the person He was talking to was an adulterous, ignorant, Samaritan woman, He still showed her grace and truth in His dealing with her. The woman was as much astonished that Christ would speak with her and grant her the meat/bread of the children when she was perceived as a dog. And then “..His disciples came, and they marveled that He talked with a woman…” (Joh 4:27). This kind of attitude was expected of the Jews who despised none Jews, but take note of the disciples’ discrimination and arrogance in dealing with some kind of people. This was not the first time and would not be the last. Paul had this to say to Corinthians 1Co 15:10 “But by the grace of God I am what I am, and His grace toward me was not in vain…” “Grace is the only thing that can make us like God. I might be dragged through heaven, earth, and hell and I would still be the same sinful, polluted wretch unless God Himself should cleanse me by His grace.” (The dying words of one ancient saint). We therefore need to constantly be reminded that this journey is that of grace and not merit. That what we are is due to the extension of grace and truth afforded to us that we walk and extend it to others.