3 As He was sitting on the Mount of Olives, the disciples came to Him privately, saying, “Tell us, when will these things happen, and what will be the sign of Your coming, and of the end of the age?”
What did the disciples mean by the end of the age?
[John 11:20-27 NKJV]
20 Then Martha, as soon as she heard that Jesus was coming, went and met Him, but Mary was sitting in the house. 21 Now Martha said to Jesus, "Lord, if You had been here, my brother would not have died. 22 "But even now I know that whatever You ask of God, God will give You."
23 Jesus said to her, "Your brother will rise again."
24 Martha said to Him, "I know that he will rise again in the resurrection at the last day."
25 Jesus said to her, "I am the resurrection and the life. He who believes in Me, though he may die, he shall live. 26 "And whoever lives and believes in Me shall never die. Do you believe this?"
27 She said to Him, "Yes, Lord, I believe that You are the Christ, the Son of God, who is to come into the world."
What did Martha expect to happen in the future?
That future day is the 1st Century expectation of the end of their current age and the beginning of a new age.
Here is another conversation about what the people expected:
[Matthew 22:23-33 NKJV]
23 The same day the Sadducees, who say there is no resurrection, came to Him and asked Him, 24 saying: "Teacher, Moses said that if a man dies, having no children, his brother shall marry his wife and raise up offspring for his brother. 25 "Now there were with us seven brothers. The first died after he had married, and having no offspring, left his wife to his brother. 26 "Likewise the second also, and the third, even to the seventh. 27 "Last of all the woman died also. 28 "Therefore, in the resurrection, whose wife of the seven will she be? For they all had her."
29 Jesus answered and said to them, "You are mistaken, not knowing the Scriptures nor the power of God. 30 "For in the resurrection they neither marry nor are given in marriage, but are like angels of God in heaven. 31 "But concerning the resurrection of the dead, have you not read what was spoken to you by God, saying, 32 'I am the God of Abraham, the God of Isaac, and the God of Jacob'? God is not the God of the dead, but of the living." 33 And when the multitudes heard [this], they were astonished at His teaching.