SIM, originally the Sudan Interior Mission, has been launching Christian workers into ministry since 1893, bringing good news to people who are living and dying without the gospel. Today SIM has over 4,000 workers from 65 nations serving on six continents in more than 70 countries. We are dedicated to prayer and care in making disciples of the Lord Jesus Christ in communities where He is least known.


Those who serve with SIM are committed to the following essential truths of biblical Christianity.

There is one God who exists eternally in three persons: Father, Son, and Holy Spirit. God is the almighty Creator, Savior, and Judge who governs all things according to His sovereign will and is accomplishing His purposes in creation and in the Church to His glory.
God the Father is the source of all that is good. He initiates creation and redemption, which He accomplishes through His Son and the Holy Spirit.
The Bible, consisting of the Old and New Testaments, is God’s written Word, revealing for all peoples His character and purposes. It is the final authority in all matters relating to belief and behavior. The Holy Spirit moved the human authors of the Bible so that what they wrote is inspired, fully reliable, and without error in all it affirms.
Humanity is the climax of God’s earthly creation, bearing His image, designed for relationship with Him, and being the object of His redeeming love. All people have sinned. This results in guilt, death, and alienation from God as well as the defacing of every aspect of human nature. People are unable to save themselves from sin’s penalty and power and from Satan’s dominion.
Jesus Christ, both fully God and fully man, entered history as Savior of the world. He was conceived of the Holy Spirit, born of a virgin, and lived an exemplary, sinless life in perfect submission to the Father and in loving relationships with others. He died on a cross, rose bodily, and ascended to heaven where He is advocate for His people and is exalted as Lord of all.
Christ’s sacrificial death, in which He bore the punishment due to sinners, is the only and all-sufficient basis of God’s provision of salvation for all people of every culture and age, expressing His love and satisfying His justice. By God’s grace the repentant sinner, through trusting alone in the Lord Jesus Christ as Savior, is put right with God, adopted by the Father into His family and receives eternal life.
The Holy Spirit makes the work of Christ effective to sinners, giving spiritual life and placing them into the Church. He indwells all believers, empowers them to love, serve, witness and obey God, equips them with gifts, and transforms them to be increasingly like Christ.
The universal Church is made up of all who have been born of the Spirit. It finds local expression in communities of believers called by God to worship, fellowship, proclaim the gospel and make disciples among all peoples, reflect God’s character, engage in works of compassion, contend for truth and justice, and celebrate baptism and communion.
The holy angels are personal spirit beings who glorify God, serve Him, and minister to His people. Satan is a spiritual being who was created by God but fell through sin. He, along with other evil spirits, is the enemy of God and humanity, has been defeated by the work of Christ, is subject to God’s authority and faces eternal condemnation.
The Lord Jesus Christ will visibly return to the earth in glory and accomplish the final triumph over evil. God will make everything new. The dead will be raised and judged. Unbelievers will suffer eternal punishment in separation from God; believers will enter into a life of eternal joy in fellowship with God, glorifying Him forever.


In 1893, three young men in their 20s had a vision to evangelize the 60 million unreached people of sub-Saharan Africa (then known as the Sudan). Unable to interest established missions—most of which said reaching the Sudan was impossible—the three set out alone forming the Sudan Interior Mission. In the 1980s, two missions in Asia and South America joined with SIM. A third merged with SIM in 1998. Today, our official name around the world is simply SIM.
SIM is what is called a “general mission”. That means our missionaries are involved in many types of ministry around the world. Some organizations focus on specific types of ministry (clean water, children, education, relief and aid, etc.). SIM missionaries are involved in these ministries as well as many others. We often partner with specialized missions in Bible translation, radio outreach, community development, medicine, HIV and AIDS ministry, aviation, and more, but our distinctive is our church-focused vision. Many of our missionaries work as church planters in pioneer areas or in partnership with local churches in discipleship, evangelism, or theological education.
SIM missionaries receive prayer and financial support from churches, friends, and others who are passionate about their ministry. The level of support needed for each missionary or family depends on several factors. Where someone is serving and the type of ministry they are involved in will change their financial needs. We work with our missionaries to determine what their individual needs are before and during the support raising process.
While our missionaries come from various Christian denominational backgrounds, we are each committed to the essential truths of biblical Christianity. See our Statement of Faith for more information.
Let’s start by getting acquainted. Contact us about getting involved with SIM around the world. We’ll contact you soon to talk about joining the SIM team.
We partner with universities, churches, and other organizations to respond to need, proclaim the gospel, and equip the Church around the world. Click here for more information about our ministry partners. All SIM policy and principles of relationship are detailed in the SIM Mission Policy which is available for review upon request.

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God invites each of us to engage in His kingdom work. Some may serve overseas, some at home. SIM would be glad to help you discern how your skills could be used in God’s work around the world.