There are many answers to that. There can be mental answers for which you need to see a specialist. There can be chemical or physical imbalances, for which you need to see a doctor.
This post cannot deal with all the possibilities of what causes depression. However, since the blog deals with Biblical questions, it will point out something from a Biblical point of view. Whether or not it applies to you, is something beyond the scope of this blog to determine. Seek professional help if you need to.
God created man for fellowship. Man broke that fellowship in the garden of Eden. Broken fellowship was passed on for generations. There is a certain depression or emptiness when a person is not connected to God.
Mankind’s misery of various kinds is generally caused by disobedience to God, by breaking the laws of God, by walking contrary to God, whether deliberately or in ignorance. If you cross the street in front of traffic, whether deliberately, or in ignorance, the result is generally the same. This is why it is imperative to keep learning more about God and God’s Word to the end of better and more perfectly walking in God’s ways.
Leviticus 26:14 “‘But if you will not listen to me, and will not do all these commandments, 15 and if you shall reject my statutes, and if your soul abhors my ordinances, so that you will not do all my commandments, but break my covenant, 16 I also will do this to you: I will appoint terror over you, even consumption and fever, that shall consume the eyes, and make the soul to pine away. You will sow your seed in vain, for your enemies will eat it. 17 I will set my face against you, and you will be struck before your enemies. Those who hate you will rule over you; and you will flee when no one pursues you.
The solution is right relationship to Jesus Christ.
Luke 13:10 He was teaching in one of the synagogues on the Sabbath day. 11 Behold, there was a woman who had a spirit of infirmity eighteen years. She was bent over, and could in no way straighten herself up. 12 When Jesus saw her, he called her, and said to her, “Woman, you are freed from your infirmity.” 13 He laid his hands on her, and immediately she stood up straight and glorified God.
Until Jesus came, there was a partial solution through the law of sacrifices that was set up by God. You can read about it in the Old Testament. There was a certain amount of atoning for sin through the sacrifices, but it had to be repeated over and over every year.
When Jesus came, He made a final sacrifice of his life to give the option for people to reconnect to God. The word “option” is used because it is not automatic. People must want to and ask to be reconnected to God. People have to believe in and confess Christ.
Romans 10:6 But the righteousness which is of faith says this, “Don’t say in your heart, ‘Who will ascend into heaven?’ (that is, to bring Christ down); 7 or, ‘Who will descend into the abyss?’ (that is, to bring Christ up from the dead.)” 8 But what does it say? “The word is near you, in your mouth, and in your heart;” that is, the word of faith which we preach: 9 that if you will confess with your mouth that Jesus is Lord, and believe in your heart that God raised him from the dead, you will be saved. 10 For with the heart, one believes resulting in righteousness; and with the mouth confession is made resulting in salvation. 11 For the Scripture says, “Whoever believes in him will not be disappointed.”
As to why Jesus had to die to satisfy God’s requirements is because a holy God cannot overlook sin. Someone had to pay a price, and Jesus volunteered.
Sometimes we hear the phrase, “freedom isn’t free” because someone paid a price. Well, to be born again isn’t free either because it cost Jesus everything.
A blog post can only introduce a topic but not cover it in depth. For more study on various topics, click here for links to various Christian ministries.
Depending on the ministry, there may be online church services, YouTube videos, podcasts, radio programs, books, teaching, or more. You have to seek out what they have.