Go.

Now the eleven disciples went to Galilee, to the mountain to which Jesus had directed them. And when they saw him they worshiped him, but some doubted. And Jesus came and said to them, “All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.”  - Matthew 28:16-20

There's this hidden little nugget in who Jesus gave the Great Commission to... did you catch it? Read it again.... did you catch it this time?

"they worshiped him... but some doubted."

Jesus, the perfect Savior, entrusts the gospel to doubtless believers AND believers with doubt. He doesn't pull the ones who doubted aside and say, "ok, you guys just wait around until you stop doubting" or "your doubt disqualifies you from participating in my mission." NO! Jesus tells even those who doubt to go out and make disciples, baptize, and teach people to follow Jesus.

There is this beautiful thing that happens when we get off of our butts and obey Jesus - we begin to understand and our hearts get changed. You don't need to be a Bible scholar or Theology professor to tell the world about Jesus. You don't need to have all of your own garbage figured out. You don't need to reach some "knowledge" peak or achieve "maximum spirituality" to tell people about Jesus. NO! You simply need to know Jesus as your Savior!
Today, get off your butt and go out into the world! With all of your doubts; with all of your garbage; with all of your imperfection... GO!

Shovel a driveway. Comfort a hurting friend. Send an ecouraging Bible verse to someone. Call your Christian brother or sister out of their sin. Stand up for the weak. Help the poor. Celebrate the accomplishment of a family member. Tell someone about what Jesus has done in your life. Pray for your enemy. Invite a new person to your house for dinner. JUST GO!

Let Jesus work through you and change others. Who knows, you might just get changed yourself.

Footnotes:

1. Matthew 28:6 Some manuscripts the Lord
2. Matthew 28:19 Or into

Cross references:

1. Matthew 28:1 : For Matt 28:1-8, see Mark 16:1-8; Luke 24:1-10; John 20:1
2. Matthew 28:1 : Matt 27:56, 61
3. Matthew 28:2 : [John 20:12]
4. Matthew 28:3 : Dan. 10:6
5. Matthew 28:3 : [Dan. 7:9; Mark 9:3; John 20:12; Acts 1:10]
6. Matthew 28:4 : [Rev. 1:17]
7. Matthew 28:6 : Matt 27:63
8. Matthew 28:7 : Matt 28:10, 16; Matt 26:32
9. Matthew 28:8 : [Ps. 2:11]
10. Matthew 28:9 : [Mark 16:9; John 20:14]
11. Matthew 28:9 : 2 Kgs. 4:27
12. Matthew 28:9 : Matt 28:17; Luke 24:52
13. Matthew 28:10 : See John 20:18
14. Matthew 28:10 : John 20:17; [Ps. 22:22; Rom. 8:29; Heb. 2:11, 12, 17]
15. Matthew 28:11 : Matt 27:65, 66
16. Matthew 28:13 : [Matt 27:64]
17. Matthew 28:14 : Matt 27:2
18. Matthew 28:14 : See Acts 12:20 (Gk.)
19. Matthew 28:15 : Matt 27:8
20. Matthew 28:16 : Matt 28:7
21. Matthew 28:17 : Matt 28:9
22. Matthew 28:18 : Matt 11:27; Dan. 7:13, 14; John 3:35; 13:3; 17:2; Acts 2:36; Rom. 14:9; 1 Cor. 15:27; Eph. 1:10, 20-22; Phil. 2:9, 10; Col. 2:10; Heb. 1:2; 2:8; 1 Pet. 3:22; [Matt 9:6; John 5:27]
23. Matthew 28:18 : [Matt 6:10; Luke 2:14]
24. Matthew 28:19 : Mark 16:15, 16
25. Matthew 28:19 : Matt 13:52
26. Matthew 28:19 : Luke 24:47; [Matt 24:14; Mark 11:17; Rom. 1:5]
27. Matthew 28:19 : Mark 16:15, 16
28. Matthew 28:19 : See Acts 8:16
29. Matthew 28:19 : [2 Cor. 13:14]
30. Matthew 28:20 : John 14:15
31. Matthew 28:20 : [Acts 1:2]
32. Matthew 28:20 : [Matt 1:23; 18:20; John 12:26; 14:3; 17:24; Acts 18:10]
33. Matthew 28:20 : See Matt 13:39