'Reality' in the Bible

But a time is coming and is already here when the true worshipers will worship the Father in spirit [from the heart, the inner self] and in truth; for the Father seeks such people to be His worshipers.

God is spirit [the Source of life, yet invisible to mankind], and those who worship Him must worship in spirit and truth.”

if then the son may make you free, in reality ye shall be free.

For the words which You gave Me I have given them; and they received and accepted them and truly understood [with confident assurance] that I came from You [from Your presence], and they believed [without any doubt] that You sent Me.