Love without truth is sentimentality; it supports and affirms us but keeps us in denial about our flaws. Truth without love is harshness; it gives us information but in such a way that we cannot really hear it. God's saving love in Christ, however, is marked by both radical truthfulness about who we are and yet also radical, unconditional commitment to us. The merciful commitment strengthens us to see the truth about ourselves and repent. The conviction and repentance moves us to cling to and rest in God's mercy and grace.
For indeed, grace is the key to it all. It is not our lavish good deeds that procure salvation, but God's lavish love and mercy. That is why the poor are as acceptable before God as the rich. It is the generosity of God, the freeness of his salvation, that lays the foundation for the society of justice for all. Even in the seemingly boring rules and regulations of tabernacle rituals, we see that God cares about the poor, that his laws make provision for the disadvantaged. God's concern for justice permeated every part of Israel's life. It should also permeate our lives.
If your fundamental is a man dying on the cross for his enemies, if the very heart of your self-image and your religion is a man praying for his enemies as he died for them, sacrificing for them, loving them - if that sinks into your heart of hearts, it's going to produce the kind of life that the early Christians produced. The most inclusive possible life out of the most exclusive possible claim - and that is this is the truth. But what is the truth? The truth is a God become weak, loving and dying for the people who opposed him, dying forgiving them.
In Ephesians 5, Paul shows us that even on earth Jesus did not use his power to oppress us but sacrificed everything to bring us into union with him. And this takes us beyond the philosophical to the personal and the practical. If God had the gospel of Jesus's salvation in mind when he established marriage, then marriage only 'works' to the degree that approximates the pattern of God's self-giving love in Christ.
We instinctively tend to limit for whom we exert ourselves. We do it for people like us, and for people whom we like. Jesus will have none of that. By depicting a Samaritan helping a Jew, Jesus could not have found a more forceful way to say that anyone at all in need - regardless of race, politics, class, and religion - is your neighbour. Not everyone is your brother or sister in faith, but everyone is your neighbour, and you must love your neighbour.