"So do not be afraid of them, for there is nothing concealed that will not be disclosed, or hidden that will not be made known." (Matthew 10:26)

Who is Jesus referring to - as "them"? What what is he referring to with regard to what will be known or disclosed?

Jesus is continuing his instructions to his disciples as he is sending them out to teach on his behalf. He is discussing those who would persecute them:
"I am sending you out like sheep among wolves. Therefore be as shrewd as snakes and as innocent as doves. Be on your guard; you will be handed over to the local councils and be flogged in the synagogues." (Matt. 10:16-17)
So with Matt. 10:26, Jesus is telling them they have no one to fear. The Supreme Being will protect them, and what they do will be known to the Supreme Being. They won't be able to hide from God.

This is an important element because some figure that they can do things that hurt others in secret. That no one will know. But this is untrue. The Supreme Being is next to each of us within these physical bodies. He is there for us when we need Him, and He is watching over us.

This means that He sees whatever we do. We cannot hide our self-centered activities from Him.

An example lies with those priests who have been molesting their young parishioners and seemingly remained undiscovered: They may feel they won't be discovered but this is not true. The Supreme Being knows they have done this.

And every activity done in self-centeredness will bear a consequence.

This is also called justice. The Supreme Being knows how to arrange the perfect form of justice. And what is that?

Each of us must experience precisely what we cause upon others. Anything we do that impacts another must also be experienced by ourselves in the future. If we help others, we get helped. If we hurt others, we get hurt.

This of course takes place upon our physical bodies - as we are not these physical bodies. They are like vehicles we drive temporarily.

We might compare the system of consequences to a demolition derby: If a driver plows his car into another car, that car will turn around and plow right back into his car - or another car will plow into his car.

But at the end of the demolition derby - after all the cars are wrecked up - the drivers can get out of their beat up cars - just as we all leave these physical bodies at the time of death.

And just as a demolition derby driver can go drive another car after his derby car is wrecked up, we also may occupy another physical body after this body dies.

How else could we experience all the consequences of the things done in a lifetime?

And this is why some children are born into starvation. It is not that God does not love us or does not exist as some figure - as they consider children born into starvation or congenital defects. Rather, through the new body the person must experience the results of the actions of their previous lifetime.

This is why Jesus was asked by his disciples when they saw a man who had been born blind:
His disciples asked him, “Rabbi, who sinned, this man or his parents, that he was born blind?” (John 9:2)
Because parents' activities can also create consequences that may be reflected in their children, this question came from Jesus' teaching them about the law of consequences.

The bottom line is that the Supreme Being created a system of justice that will precisely met out consequences according to our activities. In fact, His system is so perfect that He rarely has to intercede. While He sees what is going on, most of this is occurring automatically.

And it is for this reason that the world is so messed up today - this is not God's fault. It is because we are each - as individuals, cultures and species - suffering the results of our previous activities. The world is simply reflecting our previous choices made.