can think of One commonality they all have:
Christ. Philippians 2:5-9 Let this mind be in you, which was also in Christ Jesus: [6] Who, being in the form of God, thought it not robbery to be equal with God: [7]
But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men: [8] And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross. [9] Wherefore
God also hath highly exalted him, and given him a name which is above every name:
Ephesians 4:9-10 (Now that he
ascended, what is it but
that he also descended first into the lower parts of the earth? [10]
He that descended is the same also that ascended up far above all heavens,
that he might fill all things.)
You said: First let's see what
John 1:51 possibly means: And he saith unto him, Verily, verily, I say unto you,
Hereafter ye shall see heaven open, and the angels of God ascending and descending upon the Son of man.
Mark 1:10 And straightway coming up out of the water,
he saw the heavens opened, and
the Spirit like a dove descending upon him:
The commonality then is it is He is “for a sign which shall be spoken against” going further to say Luke 11:29-30 And when the people were gathered thick together, he began to say,
This is an evil generation: they seek a sign; and there shall no sign be given it, but the sign of Jonas the prophet. [30] For as Jonas was a sign unto the Ninevites, …so shall also the Son of man be to this generation.
luke 2:34 And Simeon blessed them, and said unto Mary his mother, Behold, this child is set for the fall and rising again of many in Israel; and
for a sign which shall be spoken against;