Then I said, I would pour out my fury upon them in the wilderness, to consume them." {1SP 265.4}

And the Lord sent fiery serpents among the people, and they bit the people; and much people of Israel died. ... The Israelites, up to this time, had been preserved from these serpents in the wilderness by a continual miracle; for the wilderness through which they traveled was infested with poisonous serpents. {1SP 315.1}

God's wrath was poured out by sending the serpents. God's wrath is when He withdraws, give people up, lets them go, hides His face. God is not an executioner, a torturer. He is our Father.

APL,
I didn't speak about God's wrath, but about the reason for the death penalty in the Old Covenant. God doesn't change, so His wrath then and now is the same. However, a death penalty was annexed then to God's laws, but it isn't applied nowadays. Why?

You don't recognize it as God's wrath, but in the quote above, that is God's wrath.

God does not command anything contrary to His will. To command something contrary to His will is tantamount to commanding sin. God does not command sin. The Law of Moses does not command sin. Nor does it accommodate the sinful desires of sinners. They illustrate and apply the principles of the Ten Commandments.

The minds of the people, blinded and debased by slavery, were not prepared to appreciate fully the far-reaching principles of God's ten precepts. That the obligations of the decalogue might be more fully understood and enforced, additional precepts were given, illustrating and applying the precepts of the ten commandments. Unlike the decalogue, these were delivered privately to Moses, who was to communicate them to the people. {RH, August 16, 1906 par. 16}

And the ultimate revelation of God's law is found in Christ life on this earth and His teachings. Teachings such as not resisting evil, turning the other cheek, not fighting and not killing your enemies.

God's will - was it God's will that the people spy out the land before entering it? NO. Did God give commands on how to spy it out? Yep!

Of course God's wrath is manifested every time sin is punished, however this is not what we are discussing. The passage I quoted says that God annexed penalties to the law given to Moses, and it states the reason why this was done - punishment was to be inflicted on the transgressor, that others should be restrained by fear. God meets people where they are, and that nation of slaves only understood the language of fear.

Yes, and this because the people would not and did not trust God. This is not God's ideal will.

The germ in the seed grows by the unfolding of the life-principle which God has implanted. Its development depends upon no human power. So it is with the kingdom of Christ. It is a new creation. Its principles of development are the opposite of those that rule the kingdoms of this world. Earthly governments prevail by physical force; they maintain their dominion by war; but the founder of the new kingdom is the Prince of Peace. The Holy Spirit represents worldly kingdoms under the symbol of fierce beasts of prey; but Christ is "the Lamb of God, which taketh away the sin of the world." John 1:29. In His plan of government there is no employment of brute force to compel the conscience. The Jews looked for the kingdom of God to be established in the same way as the kingdoms of the world. To promote righteousness they resorted to external measures. They devised methods and plans. But Christ implants a principle. By implanting truth and righteousness, He counterworks error and sin. {COL 77.1}

There is nothing commanded in the Law of Moses that violates God's Law or God's will - including capital punishment. Commanding capital punishment is not commanding sin.

Also, commanding the Hebrews to spy did not violate any of the precepts or principles of God's Law. He did not command them to sin.

PS - Nothing commanded in the Law of Moses contradicts anything Jesus said or did while here in the flesh.

The question is do God's commands represent His will? The spying out of the land was not God's will! And the result of the spying out of the land was disastrous! The people insisted on it, and God gave commands on how to do it, but it was not God's will. You say it was not a sin to spy out the land, however, the only reason the people wanted to spy it out was because of mistrust in God. They did not have faith in Him. What ever is not of faith, is what?