The Holiness of God: The Foundation
When Isaiah sees the LORD in the temple (Isaiah 6:1-8), the seraphim cry Holy, holy, holy -- the only attribute of God repeated three times in succession anywhere in Scripture. The triple repetition in Hebrew signals the superlative: God is not merely holy; he is the very definition of holiness. The word qadosh carries a core meaning of separation, distinctness, otherness -- God is wholly other, entirely different in kind from his creation. Yet holiness is not cold aloofness. Habakkuk 1:13 declares God's eyes are too pure to look on evil, yet Psalm 22:3 calls him the Holy One who is enthroned on the praises of Israel -- the same holiness that separates God from sin draws him into the worship of his redeemed people. Holiness is simultaneously God's infinite moral purity and his consuming passion for relationship with those he has made holy. In John's vision (Revelation 4:8), the four living creatures never cease crying Holy, holy, holy -- suggesting that the more deeply creation sees God, the more overwhelming his holiness becomes, not less.
The Call to Holiness: Identity Before Ethics
The command You shall be holy, for I the LORD your God am holy (Leviticus 19:2) is not merely an Old Testament legal requirement -- Peter quotes it directly for New Testament believers (1 Peter 1:16). Israel's holiness was not self-generated but derived: they were holy because God had set them apart (Exodus 19:5-6). The same is true for Christians: we are called saints (hagioi -- holy ones) not because of our moral performance but because we have been set apart in Christ (1 Corinthians 1:2). This is decisive: the biblical call to holiness is first a declaration of identity before it is a call to action. We are holy -- and therefore we pursue holiness. This sequence is everything. Reversing it -- trying to be holy in order to become acceptable to God -- collapses into moralism and spiritual exhaustion. The foundation is Paul's logic in Colossians 3:12: as God's chosen people, holy and dearly loved -- therefore put on the clothing of holiness. The indicative precedes the imperative.
Holiness vs Moralism: A Critical Distinction
Holiness and moralism are frequently confused but are fundamentally different. Moralism is the pursuit of behavioral conformity to a standard -- its root is self-effort, its energy is comparison with others, and its danger is pride when succeeding and despair when failing. Biblical holiness is a relational orientation: being set apart for God and increasingly conformed to his character. The contrast Paul draws in Romans 12:1-2 is revealing: present your bodies as a living sacrifice -- not a checklist of prohibitions but a whole-life orientation. The mind renewed by the Spirit produces holiness not by willpower alone but through transformation. J.C. Ryle's classic Holiness insists that true holiness is not a matter of occasional religious acts but of a habitual disposition of the whole person toward God. Moralism produces rule-keepers; holiness produces lovers of God whose lives increasingly reflect his character because they are increasingly captivated by who he is.
Pursuing Holiness in Everyday Life
The New Testament never presents holiness as the achievement of spiritual elites. Hebrews 12:14 commands: strive for peace with everyone, and for the holiness without which no one will see the Lord. The word strive (diokete) means pursue actively, even urgently -- holiness does not happen by passive drift. Three practical disciplines shape its pursuit. First, exposure to the holy: Isaiah was undone in God's presence before he was commissioned -- regular, honest engagement with Scripture and worship recalibrates our sense of what is truly precious. Second, deliberate mortification: putting to death what is earthly in you (Colossians 3:5) -- identifying specific patterns of sin and actively starving them rather than managing them. Third, community accountability: Hebrews 10:24 calls us to stir one another up toward love and good works -- holiness is not a private project but a communal pursuit, requiring the encouragement and honest challenge of fellow believers. Holiness is not joyless. Jonathan Edwards described it as the most beautiful thing in the universe -- the radiance of God's own character reflected in human lives.