God calls us to things that we can do with his help, things that he equips us to do, and to things that he will help us do. As Jesus said in the the great commission, “And look, I am with you always, until the end of the age.” (Matthew 28.20). If our lives are committed to obeying him and participating in obeying his command do go and make disciples (followers) of all nations (Matthew 28.18-20), whatever our role may be in that (it could be primarily a prayer role, a giving role, a practical supporting role, or even a going role), then we can trust that he will be with us and help us to accomplish what he has called us to do.
Our job is to be faithful to follow that call, even though we may feel weak and undeserving or unequipped. We can trust God will provide us the help and the strength that we need. We cannot allow fear to dissuade us or paralyze us into inaction. We need to start moving forward in obedience, and trust that he is with us as we seek to obey him, even if we don’t have all the answers. And we can remember that God calls us to work in community, in the body of Christ, and we do need each other. So if God’s people are working together, and supporting each other in the pursuit of obedience to the great commission (Matthew 28.18-20), then we can believe that God will do his part as we all do our part to the best of our ability, and believe God will help us, and others will help us as they fulfill their parts.
Matthew 28:16-20 (ERV) The eleven followers went to Galilee, to the mountain where Jesus told them to go. 17 On the mountain the followers saw Jesus. They worshiped him. But some of the followers did not believe that it was really Jesus. 18 So he came to them and said, "All authority in heaven and on earth is given to me. 19 So go and make followers of all people in the world. Baptize them in the name of the Father and the Son and the Holy Spirit. 20 Teach them to obey everything that I have told you to do. You can be sure that I will be with you always. I will continue with you until the end of time."