Returning to God

The book of Joel: Joel means the Lord is God. This book is about sin, judgment, fasting, prayer and repentance.
The final "day of the Lord" will be when He comes in all His glory and holiness to judge both the repentant sinner as well as the unrepentant sinner. The consequence of sin is separation from God.
Joel 1:14 Consecrate a fast; call a solemn assembly. Gather the elders and all the inhabitants of the land to the house of the LORD your God, and cry out to the LORD.
God wants His people to turn from sin and follow Him. He does not want to bring disaster on His people.
Joel 2:12-13 Yet even now," declares the LORD, "return to me with all your heart, with fasting, with weeping, and with mourning; and rend your hearts and not your garments." Return to the LORD your God,
for he is gracious and merciful, slow to anger, and abounding in steadfast love; and he relents over disaster.
We need God's mercy.
Joel 2:26 "You shall eat in plenty and be satisfied, and praise the name of the LORD your God,
Romans 10:11-13 For the Scripture says, "Everyone who believes in him will not be put to shame." For there is no distinction between Jew and Greek; for the same Lord is Lord of all, bestowing his riches on all who call on him. For "everyone who calls on the name of the Lord will be saved."
who has dealt wondrously with you. And my people shall never again be put to shame.
Joel 2:30-32 And I will show wonders in the heavens and on the earth, blood and fire and columns of smoke. The sun shall be turned to darkness, and the moon to blood, before the great and awesome day of the LORD comes. And it shall come to pass that everyone who calls on the name of the LORD shall be saved. For in Mount Zion and in Jerusalem there shall be those who escape, as the LORD has said, and among the survivors shall be those whom the LORD calls.
Acts 2:16-21 But this is what was uttered through the prophet Joel: "'And in the last days it shall be, God declares, that I will pour out my Spirit on all flesh,and your sons and your daughters shall prophesy,
and your young men shall see visions, and your old men shall dream dreams; even on my male servants and female servants in those days I will pour out my Spirit, and they shall prophesy. And I will show wonders in the heavens above and signs on the earth below, blood, and fire, and vapor of smoke;  the sun shall be turned to darkness and the moon to blood, before the day of the Lord comes, the great and magnificent day.
And it shall come to pass that everyone who calls upon the name of the Lord shall be saved.'
We must not take sin lightly.Sin will destroy you! Flee from it!
1 Cor.6:9-11 Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived: neither the sexually immoral, nor idolaters, nor adulterers, nor men who practice homosexuality, nor thieves, nor the greedy, nor drunkards, nor revilers, nor swindlers will inherit the kingdom of God. And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God.
1 Cor.6:19-20 Or do you not know that your body is a temple of the Holy Spirit within you, whom you have from God? You are not your own, for you were bought with a price.So glorify God in your body.