Sermon by Pastor David Ryu, on Sunday December 7, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 5:16-18.

The pursuit of happiness is the pursuit of every human soul. But we are discontent, we are empty, we are bored, because we were made for greatness, which this fallen world cannot provide. The Word of God teaches that believers are called and saved unto a life of abounding joy, and now believers must live it out. To "rejoice always" is a biblical command. Pastor David Ryu explains how every Christian has a moral obligation to be happy. He points out how the modern church often separates joy from happiness. However, why would anyone want to follow Jesus if He cannot supply true happiness?

Sermon by Pastor David Ryu, on Sunday November 30, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 5:14-15.

Sermon by Pastor David Ryu, on Sunday November 16, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 5:12-13.

In these two verses, the Apostle Paul is specifically concerned with the relationship between the church's members and the leaders entrusted with their care. The relationship between the flock and pastors can be complex and complicated, especially in today's context with contemporary challenges and expectations. But thanks be to God that we have clear apostolic instruction on this very subject.

Sermon by Pastor David Ryu, on Sunday November 9, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 5:9-11.

For some believers, the lack of assurance of salvation may be a constant struggle throughout their lives. Even Charles Spurgeon, who was the brightest preacher of the gospel in his day, at times struggled with assurance of his own salvation. However, the Bible plainly teaches that our heavenly Father desires for His children to have full assurance of His love, of His faithfulness, of His power to save His own. In this sermon, Pastor David Ryu answers 3 essential questions: 1) What is assurance of salvation? 2) What is the source of true assurance? 3) How is true assurance cultivated?

Sermon by Pastor David Ryu, on Reformation Sunday October 26, 2025, at Diaspora Church. The sermon text comes from Leviticus 10:1-2.

If Martin Luther was the spark for the Protestant Reformation, then John Calvin was the raging flame that made it an unstoppable fire. What did Calvin believe was the most necessary aspect of the Reformation, the highest purpose of the Reformation? It was not institutional or political reform. It was not even man's salvation. But it was the right worship of God. Calvin was far more concerned with the purity of worship than the five points of Calvinism. So, what is Reformed Worship or the Regulative Principle of Worship?

Sermon by Pastor David Ryu, on Sunday October 19, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 5:1-8.

While some people have an unhealthy obsession with the timing of the second coming to Christ, there are others who are indifferent to the Lord's return, dismissing it altogether or treating it as some event in the far distant future. As the day of the Lord approaches, let us be sure to be in a state of constant anticipation and readiness. King Jesus is coming soon!

Sermon by Pastor David Ryu, on Sunday October 5, 2025, at Diaspora Church. The sermon text is from 1 Thessalonians 4:13-18.

Sermon by Pastor David Ryu, on Sunday September 28, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 4:9-12.

The recent events of Charlie Kirk's death has lit a fire in the hearts of millions of men and women across the world to make their lives count for something greater than themselves. There are reports of multitudes of people going back to Church after a long time, or for the first time in their lives. In these dark and desperate days, the Church needs to shine her light all the more brightly, directing people's hunger and ambition to Christ! In these four short verses, Paul serves as our faithful guide, redirecting our ambitions toward godly ambitions that align with God's will and character.

Sermon by Pastor David Ryu, on Sunday September 14, 2025, at Diaspora Church. The sermon text comes from 1 Thessalonians 4:3-8.

The Apostle Paul placed a priority on sexual purity for believers. Sexual immorality was a major issue during Paul's time in the first century, as it continues to be a pervasive issue today. Our Christian sexual ethics must set us apart from the world. Learn about the Necessity of Sexual Purity, the Method for Sexual Purity, the Motivation for Sexual Purity, and the Power for Sexual Purity.

Sermon by Pastor David Ryu, on Sunday August 31, 2025, at Diaspora Church. The sermon text comes from 1 Corinthians 10:1-13.

Nominal and cultural Christianity may fill the pews with bodies, but in the end, it fills hell with those who follow their own vain and empty religion. The Apostle Paul issues a stern warning to the Corinthian Church and to us. He warns us that religious identity and religious affinity cannot possibly save us. He warns us that even if we enjoy an abundance of blessings now, it does not mean that God is pleased with us, nor should we be assured of His continued favor.