Have we ever been reading James and felt as though we were hearing Jesus teach on the mountain again? James writes about our words, our willingness to show mercy, and the importance of doing what God says. Again and again, we encounter principles Jesus taught in the Sermon on the Mount.
That resemblance becomes even more compelling when we remember who James was. He was Jesus’s brother, yet during Jesus’s earthly ministry, His brothers did not believe in Him (John 7:5). We do not know whether James heard the sermon firsthand, but sharing a family with Jesus did not mean he had placed his faith in Him.
Then came the resurrection. Paul records that the risen Jesus appeared to James (1 Corinthians 15:7). Scripture does not give us their conversation, but we later encounter James as a recognized pillar in the Jerusalem church (Galatians 2:9). When he introduces himself in his letter, he identifies himself as a servant of God and of the Lord Jesus Christ (James 1:1).
The brother in whom he once did not believe was now the Lord he served. And as James instructed believers, his words echoed the teaching of his King.
Listen to what Jesus said about our speech:
“Let what you say be simply ‘Yes’ or ‘No’; anything more than this comes from evil.” (Matthew 5:37 ESV).
Later, in his own instruction about oaths, James writes:
“but let your ‘yes’ be yes and your ‘no’ be no, so that you may not fall under condemnation.” (James 5:12 ESV).
Both teachings reach into our ordinary conversations. Our honesty should remain intact when telling the truth costs us something, when exaggeration would make us look better, or when keeping a promise becomes inconvenient.
This is one place where allegiance to Jesus becomes visible. The conversation at work, the explanation we give our spouse, and the commitment we make to someone who depends on us all belong within the life we have entrusted to Him. Our King has authority over the words we choose.
We hear another echo when Jesus speaks about mercy:
“Blessed are the merciful, for they shall receive mercy.” (Matthew 5:7 ESV).
James brings that same seriousness into his letter:
“For judgment is without mercy to one who has shown no mercy. Mercy triumphs over judgment.” (James 2:13 ESV).
We all know what it is to need mercy. We have needed patience when we were learning, forgiveness when we sinned, and compassion when we struggled. Yet we can become remarkably demanding when someone else needs those things from us.
How do we treat someone whose weakness inconveniences us? What happens when we have the opportunity to help a person who cannot repay us? The mercy we have received from God should shape the mercy we extend. Both Jesus and James bring our relationship with God into our treatment of the people around us.
Perhaps the clearest connection appears at the end of the Sermon on the Mount. Jesus introduces the wise builder with these words:
“Everyone then who hears these words of mine and does them” (Matthew 7:24 ESV).
He compares that person to a man who builds his house on rock. He then describes another person who hears His words but does not do them. That person builds on sand. Both hear the teaching. Their different responses become unmistakable when the storm comes (Matthew 7:24–27).
Now listen to James:
“But be doers of the word, and not hearers only, deceiving yourselves.” (James 1:22 ESV).
That warning should give us pause. We can hear a teaching, agree with it, and explain it to someone else while leaving our own conduct untouched. We can become so familiar with what Jesus says that we mistake our familiarity for obedience.
We may recognize exactly what someone else ought to change while resisting the change His words require of us.
The King calls us to hear and obey. His servant carries that same call into the lives of believers.
This helps us understand why James speaks so directly about faith and works. He asks us to consider a brother or sister who lacks adequate clothing and daily food. Someone offers kind words but provides nothing to meet the need. James asks what good that does (James 2:15–16).
There is a person in that passage. Someone is cold. Someone is hungry. And someone who professes faith has an opportunity to respond.
James calls faith without works dead (James 2:17). His concern reaches beyond whether our faith is visible to someone else. He challenges the claim that faith can remain alive while being separated from the response it calls forth.
Then comes his challenge:
“Show me your faith apart from your works, and I will show you my faith by my works.” (James 2:18 ESV).
What does our trust in Jesus lead us to do? When His teaching asks something of us, will we follow?
Calling Jesus Lord carries a claim about whose authority we recognize and whose wisdom we trust. We belong to Him. As citizens of His kingdom, we bring our desires, reactions, relationships, and resources under His rule. We depend upon His grace as we learn to follow, and the mercy He has shown us gives us every reason to trust the One who leads us.
This is why the connection between James and the Sermon on the Mount matters so much. The instruction Jesus gave on the mountain reaches into the everyday decisions of the people who confess Him as Lord. James shows us how that allegiance takes shape in a community of believers. It affects what we say, how we treat one another, and what we do when obedience becomes costly.
Of course, we will encounter moments when our conduct falls painfully short of our confession. James himself acknowledges that we all stumble in many ways (James 3:2). Faithful allegiance includes what we do when we recognize that failure.
We can confess the lie and tell the truth. We can acknowledge the harshness and seek forgiveness. We can return to the person whose need we ignored. Repentance brings even our failures under the authority of Jesus as we receive His correction and change our course.
There is hope in remembering James. His earlier unbelief did not have to define the rest of his life. He became a servant of the Lord he once failed to recognize. Through his letter, he continues to call us toward the kind of life Jesus taught.
We began by noticing how much James sounds like Jesus. That observation leaves us with a question worth carrying into our own day.
Does our life agree with our confession that Jesus is King?
As you sit with this teaching today, consider your words, your willingness to show mercy, and your response to the needs around you. Where is Jesus calling you to bring your conduct into agreement with your faith? What act of obedience can you take today because you trust your King?
If you are willing, share your reflections or questions in the comments so we can learn and walk this journey together.