Welcome To Knox Orthodox Presbyterian Church

At Knox, God is building a community of people who have experienced His love in Jesus and who are learning how to love and serve each other for Jesus’ sake.

We Invite You to Join Us!

9:30 AM-Catechism (All ages)

9:45 AM-Sunday School (All ages)

11:00 AM-Morning Worship

6:30 PM-Evening Worship

Sunday School and Sermon Series

Adult Sunday School

Beginning Sunday, July 12, 2026, the adult Sunday School class will begin viewing the video series Contending for the Faith – The Book of Jude by Rev. Jason Helopoulos. Though brief enough to read in just a few minutes, Jude’s epistle offers profound insights that are as relevant today as they were in his time. Confronted with false teaching and ungodliness, Jude sounded an alarm for the church, and his epistle provides practical lessons for standing firm in the truth and confronting falsehood without losing sight of mercy and love. In this teaching series, Rev. Jason Helopoulos explores the urgent…

Morning Sermon Series

Luke (12-13): Living By Faith – Following our series through the book of Habakkuk, we will return to the Gospel According to Luke in our morning series, beginning Lord’s Day August 09, 2026. Chapters 12–13 of Luke’s Gospel contain a section of Jesus’ teaching in which he instructs his disciples regarding the life lived by faith in Christ. Over the next fifteen Lord’s Days, we will meditate upon this teaching as we prayerfully seek the Holy Spirit’s grace for us to be those who hear and keep God’s word. 

Evening Sermon Series

Sin Increased… And Grace Abounded! – Beginning August 16, and continuing through November, our evening sermons will explore Exodus 32-34. Things had been going so well … Exodus chapters 32 to 34 describes the catastrophic incident of the golden calf and its aftermath. It’s a shocking story, because everything seemed to have been going so well for the Israelites. However, times of blessing can also become times of carelessness— with devastating results! Into what seemed to be a hopeless situation, stepped Moses. These fickle Israelites were close to his heart—and he was prepared to go to amazing lengths to ensure that they…

Shorter Catechism


Study question for August 16, 2026
Q. 33
What is justification?
A. 33
Justification is an act of God’s free grace, wherein he pardoneth all our sins, and accepteth us as righteous in his sight, only for the righteousness of Christ imputed to us, and received by faith alone.


The Westminster Shorter Catechism can be found on the OPC website.

Study question for August 23, 2026
Q. 34
What is adoption?
A. 34
Adoption is an act of God’s free grace, whereby we are received into the number, and have a right to all the privileges of, the sons of God.

The Westminster Shorter Catechism can be found on the OPC website.

Reading Through The Bible

Week 34 August 16 – August 22

SundayThe Epistles1 Timothy 4 – 6
MondayThe LawNumbers 5 – 8
Tuesday History1 Chronicles 10 – 14
WednesdayPsalmsPsalms 99 – 101
ThursdayPoetryProverbs 19
FridayThe ProphetsHosea 1 – 7
SaturdayGospels & ActsJohn 7 – 9

Services at 11:00 am and 6:30 pm

Sunday school at 9:45 am for all ages

410 Granville Dr.
Silver Spring, MD 20901
(301) 587-6637