Apostle Paul’s marital status was never specified in the bible but some believed that he was married at a point of time based on what he said in Act 26: 9-10.
9 “Indeed, I myself thought I must do many things contrary to the name of Jesus of Nazareth. 10 this I also did in Jerusalem, and many of the saints I shut up in prison, having received authority from the chief priests; and when they were put to death, I cast my vote against them. Act 26: 9-10.
Paul said he cast his vote against the Christians and history tells us that you cannot cast a vote if you are not a member of the Sanhedrin neither will a man be part of the Sanhedrin without been married. Perhaps he has lost his wife at that time as he didn’t talk about his wife in any of his writings. However, it was very obvious that he was single when he wrote 1 Corinthians 7:8.
8: but I say to the unmarried and to the widows: It is good for them if they remain even as I am; 9: but if they cannot contain let them marry: for it is better to marry than to burn. 1 Corinthians 7:8 (NKJV)
Furthermore, there is no documentation about his family but Act 23:12-35 revealed that Paul had a sister.
12 And when it was day, some of the Jews banded together and bound themselves under an oath, saying that they would neither eat nor drink till they had killed Paul. 13 Now there were more than forty who had formed this conspiracy. 14 They came to the chief priests and elders, and said, “We have bound ourselves under a great oath that we will eat nothing until we have killed Paul. 15 Now you, therefore, together with the council, suggest to the commander that he be brought down to you [a]tomorrow, as though you were going to make further inquiries concerning him; but we are ready to kill him before he comes near.” 16 So when Paul’s sister’s son heard of their ambush, he went and entered the barracks and told Paul. 17 Then Paul called one of the centurions to him and said, “Take this young man to the commander, for he has something to tell him.” 18 So he took him and brought him to the commander and said, “Paul the prisoner called me to him and asked me to bring this young man to you. He has something to say to you.”
Apostle Paul was used by God to contribute to the expansion of the Kingdom. His conversion was a miracle, which indicates that nobody is useless. Do not misinterpret his message; ask the Holy Spirit to direct you and also strengthen you as He did for Apostle Paul.
