The Rock, his work is perfect, for all his ways are justice. A God of faithfulness and without iniquity, just and upright is He. Deuteronomy 32:4
When we say that God is holy we mean that God is perfectly morally pure, sinless, upright, and containing nothing exceptionable. God is never dishonest. He never lies, cheats, or sneaks. He is never unfaithful, never un-wise, never unwilling or incapable of doing what is right. God has never sinned in thought, word, or deed. God never does anything wrong, nor is He ever the author of any evil temptation. As the Word says, “…God cannot be tempted by evil, nor does he tempt anyone…” (James 1:13b, NIV). In other words, God is morally perfect – He always has been, and He always will be. He is clean, pure, sinless, upright, righteous, good, kind, long-suffering, patient, merciful, full of grace, compassionate, peaceful, sincere, truthful, and in every other way possible: God is holy (set apart in His moral perfections). And, since God is unchanging; He will never not be perfectly morally upright.
In a practical and personal sense this is very good news for the believer in Christ. It means that we can depend on God to finish that good work which he has begun in us and in His church. That is, we can trust God to finish His good work in individual Christians and the people of God corporately (Philippians 1:6). He knows our frame, He knows our needs. He is using both of these realities to accomplish His good work in us. That is, He is sanctifying us through our frailty and our neediness.
On a cooperate level (the church) we are assured that He is in control of it all. He knows about the struggles in our church homes, and He knows about the false brothers that are “blots and blemishes at our love feasts” (so to speak- See 2 Peter 2:13). We do not need to worry- the Lord is purifying His bride in preparation for the day of consummation (Revelation 21:1-2). And, in the mean time He is allowing the tares to grow along side the wheat so that He can do His Self-glorifying harvest work (Matthew 13:24-30) on that day. God is holy. Nothing is slipping by His watchful eye; nothing will prevent His Kingdom from advancing exactly as He has ordained (Matthew 11:12). As the Word says, “But God’s firm foundation stands, bearing this seal: “The Lord knows those who are his,” and, “Let everyone who names the name of the Lord depart from iniquity” (2 Timothy 2:19).
Since God is holy- perfect in all of His moral nature- we should always trust God. We should trust God even when we do not understand why He remains silent in the face of evils within and evils without. God is a Rock, and to know Him is to trust Him, to trust Him is to love His perfect ways of justice, faithfulness, purity, and wisdom. That is why the Bible says, “The Rock, his work is perfect, for all his ways are justice. A God of faithfulness and without iniquity, just and upright is He” (Deuteronomy 32:4).