Why don't you think for just a second and consider "WHO" the "they" were Cee?
Matt. 15:
7 Ye hypocrites, well did Esaias prophesy of you, saying,
8 This people draweth nigh unto me with their mouth, and honoureth me with
their lips; but their heart is far from me.
9 But in vain they do worship me,
teaching for doctrines the
commandments of men.
Matt. 23:
4 For
they ( The Mainstream Preachers of Christ's time, not God) bind heavy burdens and grievous to be borne, and lay
them on men's shoulders; but they
themselves will not move them with one of their fingers.
Acts 7:
51 Ye stiffnecked and uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers
did, so
do ye.
52 Which of the prophets have not your fathers persecuted? and they have slain them which shewed before of the coming of the Just One; of whom ye have been now the betrayers and murderers:
53 Who have received the law by the disposition of angels, and have not kept
it.
Rom. 1:
21 Because that, when they knew God,
they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
22 Professing themselves to be wise, they became fools,
John 8:
43 Why do ye not understand my speech?
even because ye cannot hear my word.
44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it
2 Thess. 2:
9 Even him, whose coming is after the
working of Satan with all power and signs and lying wonders,
10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
11 And for this cause God shall send them strong delusion,
that they should believe a lie:
12 That they all might be damned who believed not the truth,
but had pleasure in unrighteousness.
Not all, who called themselves the Children of God, rejected God's Word's. Zechariahs, Anna, the Wise Men, Simion, there were more. These didn't reject God's instructions and create their own. These didn't "Transgress the Commandments of God" by their own religious Traditions. These didn't "teach for Doctrines the Commandments of Men".
And as Jesus promised in John 14. He manifest Himself to them just like He did to Abraham and Noah, Elijah and Every other example of Faith in the entire Bible.
How is this not true.