The Isaiah 29 verse has nothing to do with people having a vision. John the Baptist didn't catch his vision from the Bible. It was given to him from birth. John the Baptist was the last Nazarite.

(Luke 1:13-17 NIV) But the angel said to him: "Do not be afraid, Zechariah; your prayer has been heard. Your wife Elizabeth will bear you a son, and you are to give him the name John. {14} He will be a joy and delight to you, and many will rejoice because of his birth, {15} for he will be great in the sight of the Lord. He is never to take wine or other fermented drink, and he will be filled with the Holy Spirit even from birth. {16} Many of the people of Israel will he bring back to the Lord their God. {17} And he will go on before the Lord, in the spirit and power of Elijah, to turn the hearts of the fathers to their children and the disobedient to the wisdom of the righteous--to make ready a people prepared for the Lord."

God selected Jeremiah to be a prophet even before his birth. There's nothing in the Bible to suggest that believers are in that same category.

(Isaiah 29:10-14 NIV) The LORD has brought over you a deep sleep: He has sealed your eyes (the prophets); he has covered your heads (the seers). {11} For you this whole vision is nothing but words sealed in a scroll. And if you give the scroll to someone who can read, and say to him, "Read this, please," he will answer, "I can't; it is sealed." {12} Or if you give the scroll to someone who cannot read, and say, "Read this, please," he will answer, "I don't know how to read." {13} The Lord says: "These people come near to me with their mouth and honor me with their lips, but their hearts are far from me. Their worship of me is made up only of rules taught by men. {14} Therefore once more I will astound these people with wonder upon wonder; the wisdom of the wise will perish, the intelligence of the intelligent will vanish."