The kingdom of God/heaven was very important to Jesus in the gospels. In fact the word kingdom is used more than 120 times in the four gospels. Here are some clues Jesus gave us as to when the kingdom would come.
1__"Seek first the kingdom of God." Matt 6:33, Luke 12:31
Of course one won't find the kingdom if one is not looking for it. It has been more than 1900
years since this command was given, why would he tell us to look for something that cannot be found?
2__"I must preach the good news of the kingdom of God to other towns also, for I was sent for this purpose." Luke 4:43, see also Luke 8:1, 16:16, Matt 4:23, 9:35, Mark 1:14-15 The gospel that Jesus spoke of so often was about the kingdom of God.
3__"Repent for the kingdom of God is at hand." Luke 9:2, Mark 1:15, Matt 4:17, 10:7 The kingdom
very near in time.
4__"But I tell you truly, that there are SOME standing here who will not TASTE DEATH before they see the kingdom come." Matt 16:28, Mark 9:1, Luke 9:27 Both "taste" and "death" are important words and will come up again. If the kingdom had not yet come when these three gospels were written, then why include it? Why put Jesus up to unnecessary ridicule?
5__At the last supper, Jesus said, "for I tell you I will not DRINK again of the fruit of the vine until the kingdom of God comes." Luke 22:18, see also Mark 14:25 "Drink" is a new vital clue word. This fruit of the vine could be wine or vinegar/sour wine.
6__A short while later in the garden Jesus mentioned a cup. "My Father, if it be possible, let this cup pass from me nevertheless not as I will but as you will." Matt 26:39, Mark 14:36, Luke 22:42
"Shall I not drink the cup that the Father has given me?" John 18:11 What was in this cup? Could it be the "fruit of the vine" mentioned in clue #5?
7__Most kings have a crown made of precious metal and stones. Jesus the humble had one made of thorns. Mark 15:17, Matt 27:29, John 19:2, Luke 23:23
8__The Romans mockingly had written that Jesus was king. "And over his head they put this charge against him which said, "This is Jesus the King of the Jews." Matt 27:37, Mark 15:26, Luke 23:38, John 19:19-22.
9__At the beginning of the crucifixion, "There they offered him wine to drink, mixed with gall; but when he tasted it, he refused to drink it." Matt 27:34, Mark 15:23 The suspense grows, it wasn't quite time for the kingdom to arrive.
10__After this Jesus, knowing that all was now finished, said (to fulfill the scripture), "I thirst." A bowl full of vinegar/sour wine stood there so they put a sponge full of vinegar on hyssop and held it to his mouth, When Jesus had received the vinegar, he said, "It is finished." and he bowed his head and gave up his spirit." John 19:28-30 see also Matt 27:48, Mark 15:36
Jesus tasted and drank the fruit of the vine. So has the kingdom of God arrived?