Our Values

Through a close family of believers we encourage one another as we grow in our faith in Christ. Knowing Jesus Christ is the only way to God and eternal life, we are committed to building up one another in Him. Through the Holy Spirit God speaks to and guides us through His divinely inspired Word. Joining alongside other Christ-centered, Bible-believing churches to serve both locally and globally. Youth are a critical part of our church today. Therefore, we are striving for an emphasis on ministry to children and teenagers.

Pastors and Staff

Jason Siebert. Senior Paster at Plains Alliance Church

Jason Siebert, Senior Pastor:

‍Jason began ministry at the Plains Alliance Church in July, 2025.Before that, he and his family spent 18 years serving the Lord around Cheyenne, WY as youth pastor, interim pastor, and associate pastor. Jason is a graduate of Crown College in Minnesota and his passion in ministry is to see people growing in their faith and making disciples of those around them.

Jason and his wife, Anne, were married in 1999 and they have6 children (2 married), and 1 grandchild. You will find them supporting their younger 4 kids at all kinds of school and sports activities. Jason also loves talking about, coaching, and watching sports. He loves the outdoors and spending time in the woods and water. He enjoys good coffee, being with people, and especially the opportunity to put those 2 things together. (Anne considers him to be extremely extroverted)

The Siebert’s appreciate the agricultural lifestyle, having raised beef and dairy cows, along with sheep, goats, pigs, ducks, and chickens. They currently reside with only their happy lab, Ellie.

Phone: (406) 826-3916
Email: jason@cmaplains.org

Melissa Bishop, Administrative Assistant

Melissa has lived in Plains since 2019, when God provided an opportunity for her husband, Matt, to work at Clark Fork Valley Hospital. Previously they lived in St. Maries, ID, for 20 years where she enjoyed working closely with the staff of their church, serving in both children and adult ministries. Now that their youngest daughter is nearly independent, she’s excited to join our team here at Plains CMA Church. Melissa will share the position of Administrative Assistant with Anne Siebert.
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Since giving her life to Christ as a young adult, Melissa has carried a deep love for studying Scripture, claiming Psalm 86:11 for inspiration, “Teach me your way O Lord, and I will walk in your truth." She truly enjoys exploring God's Word with others, as well as exploring God's creation in the wilderness and in her own backyard with Matt, tending to flowers, berries, and vegetables. They also enjoy hiking, hunting, traveling together, and spending time with their 3 kids and 3 grandchildren as much as possible. She's grateful for the opportunity to be useful in the building of the Kingdom of God by supporting our church family in ministering to the needs of the community and pointing others to Christ.

Phone: (406) 826-3916
Email: office@cmaplains.org

Statement of Faith

Sin

Man was originally created in the image and likeness of God. He fell through disobedience, incurring thereby both physical and spiritual death. All men are born with a sinful nature, are separated from the life of God, and can be saved only through the atoning work of the Lord Jesus Christ. The prospect of the impenitent and unbelieving person is existence forever in conscious torment; and that of the believer in Christ, is everlasting joy and bliss.
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Genesis 1:27; Romans 3:23; 1 Corinthians 15:20-23; Revelation 21:8; Revelation 21:1-4)

Jesus

Jesus Christ is true God and true man. He was conceived by the Holy Spirit and born of the virgin Mary. He died upon the cross, the just for the unjust, as a substitutional sacrifice, and all who believe in Him are justified on the grounds of His shed blood. He arose from the dead according to the Scriptures. He is now at the right hand of the Majesty on high as our great High Priest. He will come again to establish His Kingdom of righteousness and peace.
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‍(Philippians 2:6-11; Luke 1:36-38; 1 Peter 3:18; Hebrews 2:9; Romans 5:9; Acts 2:23-24; Hebrews 8:1; Matthew 26:64)

Church

The church consists of all those who believe in the Lord Jesus Christ, are redeemed though His blood, and are born again of the Holy Spirit. Christ is the Head of the Body, the Church, which has been commissioned by Him to go into all the world as a witness, preaching the gospel to all nations.
The local church is a body of believers in Christ who are joined together for the worship of God, for edification through the Word of God, prayer, fellowship, the proclamation of the gospel, and observance of the ordinances of Baptism and the Lord's Supper.

(Ephesians 1:22-23; Matthew 28:19-20; Acts 2:41-47)

Sanctification

It is the will of God that each believer should be filled with the Holy Spirit and sanctified wholly, being separated from sin and the world and fully dedicated to the will of God, thereby receiving power for holy living and effective service. This is both a crisis and a progressive experience wrought in the life of the believer subsequent to conversion.

(1 Thessalonians 5:23; Acts 1:8; Romans 6:1-4)

Second Coming

The Second Coming of the Lord Jesus Christ is imminent and will be personal, visible, and premillennial. This is the believer's hope and is a vital truth that is an incentive to holy living and faithful service.
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‍‍(Hebrews 10:37; Luke 21:27; Titus 2:11-14)

Salvation

Salvation has been provided through Jesus Christ for all men, and those who repent and believe in Him are born again of the Holy Spirit, receive the gift of eternal life, and become the children of God.

(Titus 3:4-7)

Bible

The Old and New Testaments, inerrant as originally given, were verbally inspired by God and are a complete revelation of His will for the salvation of men. They constitute the divine and only rule of Christian faith and practice.

(2 Peter 1:20-22; 2Timothy 3:15-16)

Healing

Provision is made in the redemptive work of the Lord Jesus Christ for the healing of the mortal body. Prayer for the sick and anointing with oil are taught in the Scriptures and are privileges for the Church in this present age.
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(Matthew 8:16-17; James 5:13-16)

Holy Spirit

The Holy Spirit is a divine person, sent to indwell, guide, teach, empower the believer, and convince the world of sin, of righteousness, and of judgment.

(John 14:15-18; John 16:13; Acts 1:8; John 16:7-11)

Resurrection

There shall be a bodily resurrection of the just and of the unjust; for the former, a resurrection unto life; for the latter, a resurrection unto judgment.

(1 Corinthians 15:20-23; John 5:28-29)

One God

There is one God, who is infinitely perfect, existing eternally in three persons: Father, Son, and Holy Spirit.
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‍(Deuteronomy 6:4; Matthew 5:48; Matthew 28:19)

Our Vision Statement

Our Values

Pastors and Staff

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