The Old Testament is a mirror of the New Testament. And in all God's predetermined principles, however God dealt with Old Testament people (and peoples, nations), He still applies the same judgment, and the same principle:

Isaiah 28:9-10:

 9) "Whom shall He teach knowledge? and whom shall He make to understand doctrine (principles of God)? them that are weaned from the milk (Hebrews 5:11-12), and drawn from the breasts.

10) "For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:"

So then, it isn't just 'hit and miss', but the word of God in the scriptures is specific, and concise; but it must be found throughout the whole Bible, and put in proper order; for there are no conflicting scriptures. They are all complementary to all other context of the Bible, throughout the entire Christian Bible, which is the Old Testament, and the New Testament. For throughout the entire Bible you will only come up with one final topic: Jesus Christ, the Savior of men who believe in Him, the only Savior of sinful man's soul:

Romans 3:23:

23) "For all have sinned, and come short of the glory (righteousness) of God."

And when we first sin, we become guilty before God, and are therefore condemned by that sin, which then destines us to hell, and then the lake of fire, where all 'wicked' shall live in eternity, which is everlasting, and where nothing changes from that initial moment of entry; therefore, there is no end, and no reprieve, for ever.

Look at Jeremiah 30:11. God will also judge the Church, by the same principle as He did Israel:

Jeremiah 30:11: 11) "For I am with thee (Church), to save thee: though I make a full end of all nations whither I have scattered thee (denominations), yet will I not make a full end of thee: but I will not leave thee altogether unpunished (for non-conformand and obedience to the pattern of God: The 'Pattern':
 

I Corinthians 1:10: Paul admonishes and exhorts the Church:
10) "Now I beseech (firmlly but lovingly) you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, adn that there be no divisions (denominations) among you; but that ye be perfectly joined (together, in one 'body of Christ, and members in particular': I Corinthians 12:27) together in one mind and in one judgment." Having God's doctrine, and God's truth, as it is in Jesus, as revealed by the Spirit of truth:

John 16:12-13: Jesus speaks to born-again apostles of the Guide into all truth, the Spirit of truth:

12) "I have yet many things (spiritual truths) to say unto you, but ye cannot (are not yet enabled, qualified, equipped) bear (perceive, comprehend, understand) them now.

13) "Howbeit when He, the Spirit of truth (the Holy Ghost, Whom I shall send from heaven by the baptism with the Holy Ghost, beginning with Acts 2:4, according to the promise of the Father in

Joel 2:28-29, which the Father declares in John 1:33), is come, He (Alone is assigned to this ministry: and) will guide you into all truth."

God loves us, therefore, He chastens us. (Hebrews 12:7)

Job 5:17-18:

17) "Behold, happy is the man (afterward) whom God correcteth: therefore despise not thou the chastening of the Almighty."

God loves you; love Him back! (Romans 5:8)