1 Corinthians 15:8

and last of all, as to one untimely (prematurely, traumatically) born, He appeared to me also.

1 Corinthians 9:1

Am I not free [unrestrained and exempt from any obligation]? Am I not an apostle? Have I not seen Jesus our [risen] Lord [in person]? Are you not [the result and proof of] my work in the Lord?

Acts 9:17

So Ananias left and entered the house, and he laid his hands on Saul and said, “Brother Saul, the Lord Jesus, who appeared to you on the road as you came [to Damascus], has sent me so that you may regain your sight and be filled with the Holy Spirit [in order to proclaim Christ to both Jews and Gentiles].”

Acts 26:16

Get up and stand on your feet. I have appeared to you for this purpose, to appoint you [to serve] as a minister and as a witness [to testify, with authority,] not only to the things which you have seen, but also to the things in which I will appear to you,

Acts 9:3-6

As he traveled he approached Damascus, and suddenly a light from heaven flashed around him [displaying the glory and majesty of Christ];

Acts 18:9

One night the Lord said to Paul in a vision, “Do not be afraid anymore, but go on speaking and do not be silent;

Acts 22:14

And he said, ‘The God of our fathers has appointed you to know His will, [and to progressively understand His plan with clarity and power] and to see the Righteous One [Jesus Christ, the Messiah] and to hear a message from His [own] mouth.

Acts 22:18

and I saw Him saying to me, ‘Hurry and get out of Jerusalem quickly, because they will not accept your testimony about Me.’

2 Corinthians 12:1-6

It is necessary to boast, though nothing is gained by it; but I will go on to visions and revelations of the Lord.

Treasury of Scripture Knowledge

Summary

And last of all he was seen of me also, as of one born out of due time.

General references

Bible References

He was

1 Corinthians 9:1
Am I not free [unrestrained and exempt from any obligation]? Am I not an apostle? Have I not seen Jesus our [risen] Lord [in person]? Are you not [the result and proof of] my work in the Lord?
Acts 9:3
As he traveled he approached Damascus, and suddenly a light from heaven flashed around him [displaying the glory and majesty of Christ];
Acts 18:9
One night the Lord said to Paul in a vision, “Do not be afraid anymore, but go on speaking and do not be silent;
Acts 22:14
And he said, ‘The God of our fathers has appointed you to know His will, [and to progressively understand His plan with clarity and power] and to see the Righteous One [Jesus Christ, the Messiah] and to hear a message from His [own] mouth.
Acts 26:16
Get up and stand on your feet. I have appeared to you for this purpose, to appoint you [to serve] as a minister and as a witness [to testify, with authority,] not only to the things which you have seen, but also to the things in which I will appear to you,
2 Corinthians 12:1
It is necessary to boast, though nothing is gained by it; but I will go on to visions and revelations of the Lord.

General references

Acts 8:19
saying, “Give me this authority and power too, so that anyone on whom I lay my hands may receive the Holy Spirit.”