“Seek first the kingdom and his righteousness, and all these things will be given you as well” (Matthew 6:33).

When it comes to Christ, addition never works.
Let’s say someone just became a Christian. The most natural thing to do is to add weekly worship, a Bible study or small group, and giving some money to the church on top of all the things you used to do. As far as lifestyle goes, not much has changed except that you’ve added an hour or two on Sunday mornings for worship and a weekday Bible study or small group, and you’ve started giving some money to the church.
This is what adding Christianity to the old life looks like. This is where most Christians are.
The only thing is this never works. You will never grow that way.
Jesus didn’t say, “Add my kingdom and righteousness to your already busy life.”
Jesus never said, “Add some holy Christian things to your previous ungodly life.”
That’s not following Jesus.
Jesus made it pretty clear, “Seek FIRST my kingdom and righteousness.” He’s not asking us to add him. He’s asking us to completely throw out our old way of living that led to death and darkness, and replace it with kingdom values and righteous living. It is the surrendering of our old way of living, our old values, our old dreams, our old practices and placing Christ front and center.
Worship, small groups, serving others are not additions. They are the foundation to the Christian life.
That is why when anyone is in Christ, “There is a new creation. The old has gone. Everything is new!” (2 Corinthians 5:17).
Seeking Christ first is about putting God above all other things and only adding my hobbies, preferences, interests, and pursuits as long as they are consistent with kingdom values.
That’s what it means to seek first God’s kingdom and his righteousness.
Christianity is not about adding Christ. It is about throwing out the old, and replacing our old life’s values with Christ’s kingdom values.