In Paul’s first letter to the Corinthians, he talks about the physical resurrection of the body— “[For] Christ died for our sins according to the Scriptures, and that He was buried, and that He rose again the third day according to the Scriptures, and that He was seen by Cephas, then by the twelve. After that He was seen by over five hundred brethren at once, of whom the greater part remain to the present, but some have fallen asleep. After that He was seen by James, then by all the apostles. Then last of all He was seen by me also, as by one born out of due time” (1 Corinthians 15:3-8, NKJV). Paul’s evidence lay in the accounts of more than five-hundred credible witnesses.
God's Firstborn
The term firstborn is used extensively throughout the Bible, and God makes it clear that He holds a unique interest and affection for those who are His firstborn, whether of man, plant, or the animal kingdom. It is written, “Then the Lord spoke to Moses, saying: ‘Now behold, I Myself have taken the Levites from among the children of Israel instead of every firstborn who opens the womb among the children of Israel. Therefore the Levites shall be Mine, because all the firstborn are Mine. On the day that I struck all the firstborn in the land of Egypt, I sanctified to Myself all the firstborn in Israel, both man and beast. They shall be Mine: I am the Lord’” (Numbers 3:11-13).