I see Mark 16 being applied to the Gentiles in Acts 10:
[Mark 16:15 KJV] "And he said unto them, Go ye into all the world, and preach the gospel to every creature." ********** Jesus commanded the apostles to preach the gospel. Which gospel were they to preach? ********** [Matthew 4:23 KJV] "And Jesus went about all Galilee, teaching in their synagogues, and preaching the gospel of the kingdom, and healing all manner of sickness and all manner of disease among the people."
[Matthew 24:14 KJV] "And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come." *********** Jesus and the apostles preached the gospel of the kingdom. They were preaching the promised millennial kingdom on earth.
[Mark 16:16 KJV] "He that believeth and is baptized shall be saved; but he that believeth not shall be damned."
[Matthew 24:13 KJV] "But he that shall endure unto the end, the same shall be saved."
[Matthew 24:22 KJV] "And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened." ********* To be saved was for believing Israel to be delivered at the end of the tribulation. He who believes and is baptized will likewise be saved to enter the kingdom.
[Mark 16:17 KJV] "And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues;" ********* The Gentiles in Acts 10 conformed to Mark 16
[Acts 10:43 KJV] "To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins."
[Acts 10:44 KJV] "While Peter yet spake these words, the Holy Ghost fell on all them which heard the word."
[Acts 10:45 KJV] "And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost."
[Acts 10:46 KJV] "For they heard them speak with tongues, and magnify God. Then answered Peter,"
[Acts 10:47 KJV] "Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?"
[Acts 10:48 KJV] "And he commanded them to be baptized in the name of the Lord. Then prayed they him to tarry certain days." ********** These Gentiles believed on the name of Jesus and were commanded to be baptized in accordance to Mark 16:16. They spoke in tongues in accordance to Mark 16:17. These Gentiles were also therefore saved to enter the millennial kingdom along with believing Israel in accordance to Mark 16:16.
Peter wasn't seen to be intentionally obeying the command of Mark 16:16, but God started to fulfill Mark 16 with theses Gentiles.
[Mark 16:15 KJV] "And he said unto them, Go ye into all the world, and preach the gospel to every creature." ********** Jesus commanded the apostles to preach the gospel. Which gospel were they to preach? ********** [Matthew 4:23 KJV] "And Jesus went about all Galilee, teaching in their synagogues, and preaching the gospel of the kingdom, and healing all manner of sickness and all manner of disease among the people."
[Matthew 24:14 KJV] "And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come." *********** Jesus and the apostles preached the gospel of the kingdom. They were preaching the promised millennial kingdom on earth.
[Mark 16:16 KJV] "He that believeth and is baptized shall be saved; but he that believeth not shall be damned."
[Matthew 24:13 KJV] "But he that shall endure unto the end, the same shall be saved."
[Matthew 24:22 KJV] "And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened." ********* To be saved was for believing Israel to be delivered at the end of the tribulation. He who believes and is baptized will likewise be saved to enter the kingdom.
[Mark 16:17 KJV] "And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues;" ********* The Gentiles in Acts 10 conformed to Mark 16
[Acts 10:43 KJV] "To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins."
[Acts 10:44 KJV] "While Peter yet spake these words, the Holy Ghost fell on all them which heard the word."
[Acts 10:45 KJV] "And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost."
[Acts 10:46 KJV] "For they heard them speak with tongues, and magnify God. Then answered Peter,"
[Acts 10:47 KJV] "Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?"
[Acts 10:48 KJV] "And he commanded them to be baptized in the name of the Lord. Then prayed they him to tarry certain days." ********** These Gentiles believed on the name of Jesus and were commanded to be baptized in accordance to Mark 16:16. They spoke in tongues in accordance to Mark 16:17. These Gentiles were also therefore saved to enter the millennial kingdom along with believing Israel in accordance to Mark 16:16.
Peter wasn't seen to be intentionally obeying the command of Mark 16:16, but God started to fulfill Mark 16 with theses Gentiles.