Treasury of Scripture Knowledge

Summary

And he ordained twelve, that they should be with him, and that he might send them forth to preach,

Bible References

He ordained

John 15:16
You [apostles] did not choose me, but I chose you, and appointed you to go and bear much fruit [i.e., through their evangelizing], and that your fruit should last. Then the Father will give you whatever you ask Him for in my name [i.e. by my authority].
Acts 1:24
Then they prayed, "Lord, you know the inner thoughts of all men, so show us which one of these two men should be selected
Galatians 1:1
[This letter is from] Paul, an apostle, (not from [the authority of] men, or through the [agency] of a man, but by [a direct commission from] Jesus Christ and God the Father, who raised Him from the dead).

And

Luke 9:1
Jesus then called the twelve apostles together and gave them power and authority over all evil spirits and [the ability] to heal diseases.
Luke 10:1
Now after these things [happened] the Lord appointed seventy-two other disciples [Note: Some ancient manuscripts say "seventy." This group would have been in addition to the twelve. See Luke 9:1], and sent them two by two on ahead of Him into every town and locality that He planned to visit.
Luke 24:47
And [the need for] a change of heart and life in order to receive the forgiveness of sins [from God] will be preached in Jesus' name [i.e., by His authority] to people of all nations, beginning from Jerusalem.
Acts 1:8
But, you apostles will receive power when the Holy Spirit descends on you and [then] you will become My witnesses [i.e., to tell what you know] in Jerusalem, in [the countries of] Judea and Samaria, and [even] to the distant regions of the earth."